139522872 has 32 divisors (see below), whose sum is σ = 349134480. Its totient is φ = 46464000.

The previous prime is 139522861. The next prime is 139522883. The reversal of 139522872 is 278225931.

It is an interprime number because it is at equal distance from previous prime (139522861) and next prime (139522883).

It is a super-2 number, since 2×139522872² = 38933263622256768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139522872.

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, 32872 + ... + 36872.

Almost surely, 2^139522872 is an apocalyptic number.

139522872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139522872 is an abundant number, since it is smaller than the sum of its proper divisors (209611608).

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

139522872 is a wasteful number, since it uses less digits than its factorization.

139522872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463 (or 5459 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 139522872 is about 11811.9800203014. The cubic root of 139522872 is about 518.6588615813.

The spelling of 139522872 in words is "one hundred thirty-nine million, five hundred twenty-two thousand, eight hundred seventy-two".