139090965 has 16 divisors (see below), whose sum is σ = 239664768. Its totient is φ = 68475456.

The previous prime is 139090961. The next prime is 139090967. The reversal of 139090965 is 569090931.

It is not a de Polignac number, because 139090965 - 2² = 139090961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139090961) 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 15 ways as a sum of consecutive naturals, for example, 356449 + ... + 356838.

It is an arithmetic number, because the mean of its divisors is an integer number (14979048).

Almost surely, 2^139090965 is an apocalyptic number.

139090965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139090965 is a deficient number, since it is larger than the sum of its proper divisors (100573803).

139090965 is a wasteful number, since it uses less digits than its factorization.

139090965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713308.

The product of its (nonzero) digits is 65610, while the sum is 42.

The square root of 139090965 is about 11793.6832669018. The cubic root of 139090965 is about 518.1231216007.

The spelling of 139090965 in words is "one hundred thirty-nine million, ninety thousand, nine hundred sixty-five".