139155696 has 120 divisors (see below), whose sum is σ = 413671440. Its totient is φ = 43545600.

The previous prime is 139155671. The next prime is 139155707. The reversal of 139155696 is 696551931.

139155696 is a `hidden beast` number, since 1 + 3 + 9 + 1 + 556 + 96 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (218700) is a multiple of the sum of its prime divisors (486).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 495076 + ... + 495356.

It is an arithmetic number, because the mean of its divisors is an integer number (3447262).

Almost surely, 2^139155696 is an apocalyptic number.

139155696 is a gapful number since it is divisible by the number (16) 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 139155696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206835720).

139155696 is an abundant number, since it is smaller than the sum of its proper divisors (274515744).

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

139155696 is a wasteful number, since it uses less digits than its factorization.

139155696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 486 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The square root of 139155696 is about 11796.4272557415. The cubic root of 139155696 is about 518.2034848995.

The spelling of 139155696 in words is "one hundred thirty-nine million, one hundred fifty-five thousand, six hundred ninety-six".