139408488 has 48 divisors (see below), whose sum is σ = 389750400. Its totient is φ = 44969760.

The previous prime is 139408471. The next prime is 139408501. The reversal of 139408488 is 884804931.

It is a super-2 number, since 2×139408488² = 38869453052892288, which contains 22 as substring.

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, 28998 + ... + 33461.

It is an arithmetic number, because the mean of its divisors is an integer number (8119800).

Almost surely, 2^139408488 is an apocalyptic number.

139408488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139408488 is an abundant number, since it is smaller than the sum of its proper divisors (250341912).

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

139408488 is a wasteful number, since it uses less digits than its factorization.

139408488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62502 (or 62495 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 139408488 is about 11807.1371635973. The cubic root of 139408488 is about 518.5170867499.

The spelling of 139408488 in words is "one hundred thirty-nine million, four hundred eight thousand, four hundred eighty-eight".