139804056 has 320 divisors, whose sum is σ = 496584000. Its totient is φ = 36578304.

The previous prime is 139804043. The next prime is 139804057. The reversal of 139804056 is 650408931.

It is a super-2 number, since 2×139804056² = 39090348148102272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 139804056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139804057) by changing a digit.

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 in 79 ways as a sum of consecutive naturals, for example, 3778470 + ... + 3778506.

It is an arithmetic number, because the mean of its divisors is an integer number (1551825).

Almost surely, 2^139804056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139804056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248292000).

139804056 is an abundant number, since it is smaller than the sum of its proper divisors (356779944).

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

139804056 is a wasteful number, since it uses less digits than its factorization.

139804056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 139804056 is about 11823.8765216827. The cubic root of 139804056 is about 519.0070499226.

The spelling of 139804056 in words is "one hundred thirty-nine million, eight hundred four thousand, fifty-six".