139402092 has 12 divisors (see below), whose sum is σ = 325271576. Its totient is φ = 46467360.

The previous prime is 139402049. The next prime is 139402177. The reversal of 139402092 is 290204931.

139402092 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5808409 + ... + 5808432.

Almost surely, 2^139402092 is an apocalyptic number.

139402092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139402092 is an abundant number, since it is smaller than the sum of its proper divisors (185869484).

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

139402092 is a wasteful number, since it uses less digits than its factorization.

139402092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11616848 (or 11616846 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 139402092 is about 11806.8663073654. The cubic root of 139402092 is about 518.5091568501.

The spelling of 139402092 in words is "one hundred thirty-nine million, four hundred two thousand, ninety-two".