139062690 has 64 divisors (see below), whose sum is σ = 399369600. Its totient is φ = 34229952.

The previous prime is 139062643. The next prime is 139062701. The reversal of 139062690 is 96260931.

139062690 is a `hidden beast` number, since 1 + 390 + 6 + 269 + 0 = 666.

It is a super-2 number, since 2×139062690² = 38676863500072200, which contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 16300 + ... + 23319.

It is an arithmetic number, because the mean of its divisors is an integer number (6240150).

Almost surely, 2^139062690 is an apocalyptic number.

139062690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139062690 is an abundant number, since it is smaller than the sum of its proper divisors (260306910).

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

139062690 is a wasteful number, since it uses less digits than its factorization.

139062690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39648 (or 39642 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 139062690 is about 11792.4844710519. The cubic root of 139062690 is about 518.0880104678.

The spelling of 139062690 in words is "one hundred thirty-nine million, sixty-two thousand, six hundred ninety".