139998026 has 32 divisors (see below), whose sum is σ = 260330112. Its totient is φ = 55088640.

The previous prime is 139998017. The next prime is 139998029. The reversal of 139998026 is 620899931.

It is not an unprimeable number, because it can be changed into a prime (139998029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2585 + ... + 16931.

It is an arithmetic number, because the mean of its divisors is an integer number (8135316).

Almost surely, 2^139998026 is an apocalyptic number.

139998026 is a deficient number, since it is larger than the sum of its proper divisors (120332086).

139998026 is a wasteful number, since it uses less digits than its factorization.

139998026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14414.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 139998026 is about 11832.0761491802. The cubic root of 139998026 is about 519.2469697014.

The spelling of 139998026 in words is "one hundred thirty-nine million, nine hundred ninety-eight thousand, twenty-six".