139477877 has 32 divisors (see below), whose sum is σ = 185794560. Its totient is φ = 101364480.

The previous prime is 139477873. The next prime is 139477883. The reversal of 139477877 is 778774931.

It is a happy number.

It is not a de Polignac number, because 139477877 - 2² = 139477873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139477873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165824 + ... + 166662.

It is an arithmetic number, because the mean of its divisors is an integer number (5806080).

Almost surely, 2^139477877 is an apocalyptic number.

139477877 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

139477877 is a deficient number, since it is larger than the sum of its proper divisors (46316683).

139477877 is a wasteful number, since it uses less digits than its factorization.

139477877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001.

The product of its digits is 2074464, while the sum is 53.

The square root of 139477877 is about 11810.0752326139. The cubic root of 139477877 is about 518.6031011546.

The spelling of 139477877 in words is "one hundred thirty-nine million, four hundred seventy-seven thousand, eight hundred seventy-seven".