139002890 has 32 divisors (see below), whose sum is σ = 273490560. Its totient is φ = 50554944.

The previous prime is 139002889. The next prime is 139002901. The reversal of 139002890 is 98200931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731 + ... + 16689.

It is an arithmetic number, because the mean of its divisors is an integer number (8546580).

Almost surely, 2^139002890 is an apocalyptic number.

139002890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139002890 is a deficient number, since it is larger than the sum of its proper divisors (134487670).

139002890 is a wasteful number, since it uses less digits than its factorization.

139002890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16046.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 139002890 is about 11789.9486852149. The cubic root of 139002890 is about 518.0137367595.

The spelling of 139002890 in words is "one hundred thirty-nine million, two thousand, eight hundred ninety".