139800166 has 16 divisors (see below), whose sum is σ = 232516368. Its totient is φ = 62503200.

The previous prime is 139800139. The next prime is 139800169. The reversal of 139800166 is 661008931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139800169) 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, 50745 + ... + 53428.

It is an arithmetic number, because the mean of its divisors is an integer number (14532273).

Almost surely, 2^139800166 is an apocalyptic number.

139800166 is a deficient number, since it is larger than the sum of its proper divisors (92716202).

139800166 is a wasteful number, since it uses less digits than its factorization.

139800166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104247.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 139800166 is about 11823.7120228801. The cubic root of 139800166 is about 519.0022361468.

The spelling of 139800166 in words is "one hundred thirty-nine million, eight hundred thousand, one hundred sixty-six".