139477248 has 144 divisors (see below), whose sum is σ = 437088960. Its totient is φ = 43720704.

The previous prime is 139477243. The next prime is 139477253. The reversal of 139477248 is 842774931.

139477248 is a `hidden beast` number, since 139 + 477 + 2 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (139477243) and next prime (139477253).

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (139477243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116911 + ... + 118097.

It is an arithmetic number, because the mean of its divisors is an integer number (3035340).

Almost surely, 2^139477248 is an apocalyptic number.

139477248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139477248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218544480).

139477248 is an abundant number, since it is smaller than the sum of its proper divisors (297611712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139477248 is a wasteful number, since it uses less digits than its factorization.

139477248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229 (or 1209 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 139477248 is about 11810.0486027789. The cubic root of 139477248 is about 518.6023215762.

The spelling of 139477248 in words is "one hundred thirty-nine million, four hundred seventy-seven thousand, two hundred forty-eight".