139952307 has 16 divisors (see below), whose sum is σ = 207020160. Its totient is φ = 83380800.

The previous prime is 139952303. The next prime is 139952317. The reversal of 139952307 is 703259931.

It is not a de Polignac number, because 139952307 - 2² = 139952303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139952303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33994 + ... + 37887.

It is an arithmetic number, because the mean of its divisors is an integer number (12938760).

Almost surely, 2^139952307 is an apocalyptic number.

139952307 is a deficient number, since it is larger than the sum of its proper divisors (67067853).

139952307 is a wasteful number, since it uses less digits than its factorization.

139952307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71954.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 139952307 is about 11830.1439974330. The cubic root of 139952307 is about 519.1904402451.

The spelling of 139952307 in words is "one hundred thirty-nine million, nine hundred fifty-two thousand, three hundred seven".