139404692 has 24 divisors (see below), whose sum is σ = 295210944. Its totient is φ = 56230272.

The previous prime is 139404623. The next prime is 139404697. The reversal of 139404692 is 296404931.

139404692 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139404692² = 38867336303229728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139404697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145958 + ... + 146909.

It is an arithmetic number, because the mean of its divisors is an integer number (12300456).

Almost surely, 2^139404692 is an apocalyptic number.

It is an amenable number.

139404692 is an abundant number, since it is smaller than the sum of its proper divisors (155806252).

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

139404692 is a wasteful number, since it uses less digits than its factorization.

139404692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292895 (or 292893 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 139404692 is about 11806.9764122742. The cubic root of 139404692 is about 518.5123804159.

The spelling of 139404692 in words is "one hundred thirty-nine million, four hundred four thousand, six hundred ninety-two".