139612190 has 32 divisors (see below), whose sum is σ = 265295520. Its totient is φ = 52752384.

The previous prime is 139612163. The next prime is 139612201. The reversal of 139612190 is 91216931.

It is a super-2 number, since 2×139612190² = 38983127193192200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81422 + ... + 83118.

It is an arithmetic number, because the mean of its divisors is an integer number (8290485).

Almost surely, 2^139612190 is an apocalyptic number.

139612190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139612190 is a deficient number, since it is larger than the sum of its proper divisors (125683330).

139612190 is a wasteful number, since it uses less digits than its factorization.

139612190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 139612190 is about 11815.7602379195. The cubic root of 139612190 is about 518.7695141447.

The spelling of 139612190 in words is "one hundred thirty-nine million, six hundred twelve thousand, one hundred ninety".