139557166 has 32 divisors (see below), whose sum is σ = 255317760. Its totient is φ = 55878336.

The previous prime is 139557163. The next prime is 139557179. The reversal of 139557166 is 661755931.

It is a happy number.

139557166 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139557161) 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 15 ways as a sum of consecutive naturals, for example, 15825 + ... + 23011.

It is an arithmetic number, because the mean of its divisors is an integer number (7978680).

Almost surely, 2^139557166 is an apocalyptic number.

139557166 is a deficient number, since it is larger than the sum of its proper divisors (115760594).

139557166 is a wasteful number, since it uses less digits than its factorization.

139557166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7288.

The product of its digits is 170100, while the sum is 43.

The square root of 139557166 is about 11813.4315928946. The cubic root of 139557166 is about 518.7013526549.

The spelling of 139557166 in words is "one hundred thirty-nine million, five hundred fifty-seven thousand, one hundred sixty-six".