139752091 has 8 divisors (see below), whose sum is σ = 140868000. Its totient is φ = 138640320.

The previous prime is 139752083. The next prime is 139752157. The reversal of 139752091 is 190257931.

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 139752091 - 2³ = 139752083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139752091.

It is not an unprimeable number, because it can be changed into a prime (139752001) 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 7 ways as a sum of consecutive naturals, for example, 107775 + ... + 109063.

It is an arithmetic number, because the mean of its divisors is an integer number (17608500).

Almost surely, 2^139752091 is an apocalyptic number.

139752091 is a deficient number, since it is larger than the sum of its proper divisors (1115909).

139752091 is a wasteful number, since it uses less digits than its factorization.

139752091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 139752091 is about 11821.6788570829. The cubic root of 139752091 is about 518.9427371876.

The spelling of 139752091 in words is "one hundred thirty-nine million, seven hundred fifty-two thousand, ninety-one".