139377655 has 8 divisors (see below), whose sum is σ = 171332784. Its totient is φ = 108782400.

The previous prime is 139377613. The next prime is 139377691. The reversal of 139377655 is 556773931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139377655 - 2⁹ = 139377143 is a prime.

It is a super-2 number, since 2×139377655² = 38852261426598050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339741 + ... + 340150.

It is an arithmetic number, because the mean of its divisors is an integer number (21416598).

Almost surely, 2^139377655 is an apocalyptic number.

139377655 is a deficient number, since it is larger than the sum of its proper divisors (31955129).

139377655 is an equidigital number, since it uses as much as digits as its factorization.

139377655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679937.

The product of its digits is 595350, while the sum is 46.

The square root of 139377655 is about 11805.8313980846. The cubic root of 139377655 is about 518.4788570927.

The spelling of 139377655 in words is "one hundred thirty-nine million, three hundred seventy-seven thousand, six hundred fifty-five".