139889456 has 20 divisors (see below), whose sum is σ = 309755472. Its totient is φ = 59952576.

The previous prime is 139889443. The next prime is 139889471. The reversal of 139889456 is 654988931.

It is a junction number, because it is equal to n+sod(n) for n = 139889398 and 139889407.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 624395 + ... + 624618.

Almost surely, 2^139889456 is an apocalyptic number.

139889456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139889456 is an abundant number, since it is smaller than the sum of its proper divisors (169866016).

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

139889456 is a wasteful number, since it uses less digits than its factorization.

139889456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249028 (or 1249022 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The square root of 139889456 is about 11827.4873071164. The cubic root of 139889456 is about 519.1127077540.

The spelling of 139889456 in words is "one hundred thirty-nine million, eight hundred eighty-nine thousand, four hundred fifty-six".