139027917 has 16 divisors (see below), whose sum is σ = 212432000. Its totient is φ = 79227072.

The previous prime is 139027897. The next prime is 139027949. The reversal of 139027917 is 719720931.

It is not a de Polignac number, because 139027917 - 2¹² = 139023821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139027517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1042 + ... + 16707.

It is an arithmetic number, because the mean of its divisors is an integer number (13277000).

Almost surely, 2^139027917 is an apocalyptic number.

It is an amenable number.

139027917 is a deficient number, since it is larger than the sum of its proper divisors (73404083).

139027917 is a wasteful number, since it uses less digits than its factorization.

139027917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18132.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 139027917 is about 11791.0100076287. The cubic root of 139027917 is about 518.0448237674.

The spelling of 139027917 in words is "one hundred thirty-nine million, twenty-seven thousand, nine hundred seventeen".