139994430 has 32 divisors (see below), whose sum is σ = 338010624. Its totient is φ = 37106976.

The previous prime is 139994429. The next prime is 139994441. The reversal of 139994430 is 34499931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8962 + ... + 18981.

It is an arithmetic number, because the mean of its divisors is an integer number (10562832).

Almost surely, 2^139994430 is an apocalyptic number.

139994430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139994430 is an abundant number, since it is smaller than the sum of its proper divisors (198016194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139994430 is a wasteful number, since it uses less digits than its factorization.

139994430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28120.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 139994430 is about 11831.9241883981. The cubic root of 139994430 is about 519.2425238576.

The spelling of 139994430 in words is "one hundred thirty-nine million, nine hundred ninety-four thousand, four hundred thirty".