139642796 has 6 divisors (see below), whose sum is σ = 244374900. Its totient is φ = 69821396.

The previous prime is 139642771. The next prime is 139642813. The reversal of 139642796 is 697246931.

It is a happy number.

It is a super-2 number, since 2×139642796² = 39000220949395232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139642796.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17455346 + ... + 17455353.

It is an arithmetic number, because the mean of its divisors is an integer number (40729150).

Almost surely, 2^139642796 is an apocalyptic number.

It is an amenable number.

139642796 is a deficient number, since it is larger than the sum of its proper divisors (104732104).

139642796 is a wasteful number, since it uses less digits than its factorization.

139642796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34910703 (or 34910701 counting only the distinct ones).

The product of its digits is 489888, while the sum is 47.

The square root of 139642796 is about 11817.0553015546. The cubic root of 139642796 is about 518.8074198597.

The spelling of 139642796 in words is "one hundred thirty-nine million, six hundred forty-two thousand, seven hundred ninety-six".