139864886 has 16 divisors (see below), whose sum is σ = 250193664. Its totient is φ = 57335784.

The previous prime is 139864873. The next prime is 139864889. The reversal of 139864886 is 688468931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139864889) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 216860 + ... + 217503.

It is an arithmetic number, because the mean of its divisors is an integer number (15637104).

Almost surely, 2^139864886 is an apocalyptic number.

139864886 is a deficient number, since it is larger than the sum of its proper divisors (110328778).

139864886 is a wasteful number, since it uses less digits than its factorization.

139864886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434395.

The product of its digits is 1990656, while the sum is 53.

The square root of 139864886 is about 11826.4485793496. The cubic root of 139864886 is about 519.0823138834.

The spelling of 139864886 in words is "one hundred thirty-nine million, eight hundred sixty-four thousand, eight hundred eighty-six".