139666700 has 18 divisors (see below), whose sum is σ = 303076956. Its totient is φ = 55866640.

The previous prime is 139666699. The next prime is 139666717. The reversal of 139666700 is 7666931.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 698234 + ... + 698433.

Almost surely, 2^139666700 is an apocalyptic number.

139666700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139666700 is an abundant number, since it is smaller than the sum of its proper divisors (163410256).

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

139666700 is a wasteful number, since it uses less digits than its factorization.

139666700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396681 (or 1396674 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 139666700 is about 11818.0666777608. The cubic root of 139666700 is about 518.8370212555.

The spelling of 139666700 in words is "one hundred thirty-nine million, six hundred sixty-six thousand, seven hundred".