139471488 has 192 divisors, whose sum is σ = 441823200. Its totient is φ = 41969664.

The previous prime is 139471487. The next prime is 139471529. The reversal of 139471488 is 884174931.

It is a happy number.

139471488 is a `hidden beast` number, since 13 + 94 + 71 + 488 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

Its product of digits (193536) is a multiple of the sum of its prime divisors (224).

It is not an unprimeable number, because it can be changed into a prime (139471481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1003323 + ... + 1003461.

Almost surely, 2^139471488 is an apocalyptic number.

139471488 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 139471488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220911600).

139471488 is an abundant number, since it is smaller than the sum of its proper divisors (302351712).

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

139471488 is a wasteful number, since it uses less digits than its factorization.

139471488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 224 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 139471488 is about 11809.8047401301. The cubic root of 139471488 is about 518.5951825612.

The spelling of 139471488 in words is "one hundred thirty-nine million, four hundred seventy-one thousand, four hundred eighty-eight".