139395907 has 8 divisors (see below), whose sum is σ = 160380000. Its totient is φ = 118679424.

The previous prime is 139395901. The next prime is 139395911. The reversal of 139395907 is 709593931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139395907 - 2³ = 139395899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139395901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65782 + ... + 67867.

It is an arithmetic number, because the mean of its divisors is an integer number (20047500).

Almost surely, 2^139395907 is an apocalyptic number.

139395907 is a deficient number, since it is larger than the sum of its proper divisors (20984093).

139395907 is a wasteful number, since it uses less digits than its factorization.

139395907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133805.

The product of its (nonzero) digits is 229635, while the sum is 46.

The square root of 139395907 is about 11806.6043805999. The cubic root of 139395907 is about 518.5014883221.

The spelling of 139395907 in words is "one hundred thirty-nine million, three hundred ninety-five thousand, nine hundred seven".