139956366 has 16 divisors (see below), whose sum is σ = 305359488. Its totient is φ = 42411000.

The previous prime is 139956347. The next prime is 139956371. The reversal of 139956366 is 663659931.

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, 1060210 + ... + 1060341.

It is an arithmetic number, because the mean of its divisors is an integer number (19084968).

Almost surely, 2^139956366 is an apocalyptic number.

139956366 is an abundant number, since it is smaller than the sum of its proper divisors (165403122).

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

139956366 is a wasteful number, since it uses less digits than its factorization.

139956366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120567.

The product of its digits is 787320, while the sum is 48.

The square root of 139956366 is about 11830.3155494687. The cubic root of 139956366 is about 519.1954595113.

The spelling of 139956366 in words is "one hundred thirty-nine million, nine hundred fifty-six thousand, three hundred sixty-six".