139400308 has 12 divisors (see below), whose sum is σ = 249141312. Its totient is φ = 68217080.

The previous prime is 139400297. The next prime is 139400329. The reversal of 139400308 is 803004931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370558 + ... + 370933.

It is an arithmetic number, because the mean of its divisors is an integer number (20761776).

Almost surely, 2^139400308 is an apocalyptic number.

It is an amenable number.

139400308 is a deficient number, since it is larger than the sum of its proper divisors (109741004).

139400308 is a wasteful number, since it uses less digits than its factorization.

139400308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741542 (or 741540 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 139400308 is about 11806.7907578647. The cubic root of 139400308 is about 518.5069449649.

The spelling of 139400308 in words is "one hundred thirty-nine million, four hundred thousand, three hundred eight".