139037090 has 8 divisors (see below), whose sum is σ = 250266780. Its totient is φ = 55614832.

The previous prime is 139037081. The next prime is 139037123. The reversal of 139037090 is 90730931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 139027681 + 9409 = 11791^2 + 97^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 6951845 + ... + 6951864.

Almost surely, 2^139037090 is an apocalyptic number.

139037090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139037090 is a deficient number, since it is larger than the sum of its proper divisors (111229690).

139037090 is a wasteful number, since it uses less digits than its factorization.

139037090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13903716.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 139037090 is about 11791.3989840052. The cubic root of 139037090 is about 518.0562169723.

The spelling of 139037090 in words is "one hundred thirty-nine million, thirty-seven thousand, ninety".