139030550 has 24 divisors (see below), whose sum is σ = 262985400. Its totient is φ = 54668480.

The previous prime is 139030547. The next prime is 139030589. The reversal of 139030550 is 55030931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20615 + ... + 26514.

It is an arithmetic number, because the mean of its divisors is an integer number (10957725).

Almost surely, 2^139030550 is an apocalyptic number.

139030550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139030550 is a deficient number, since it is larger than the sum of its proper divisors (123954850).

139030550 is a wasteful number, since it uses less digits than its factorization.

139030550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47200 (or 47195 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 139030550 is about 11791.1216599609. The cubic root of 139030550 is about 518.0480941019.

The spelling of 139030550 in words is "one hundred thirty-nine million, thirty thousand, five hundred fifty".