139663430 has 16 divisors (see below), whose sum is σ = 251532000. Its totient is φ = 55834752.

The previous prime is 139663421. The next prime is 139663451. The reversal of 139663430 is 34366931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27662 + ... + 32318.

It is an arithmetic number, because the mean of its divisors is an integer number (15720750).

Almost surely, 2^139663430 is an apocalyptic number.

139663430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139663430 is a deficient number, since it is larger than the sum of its proper divisors (111868570).

139663430 is a wasteful number, since it uses less digits than its factorization.

139663430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 139663430 is about 11817.9283294493. The cubic root of 139663430 is about 518.8329720672.

The spelling of 139663430 in words is "one hundred thirty-nine million, six hundred sixty-three thousand, four hundred thirty".