139522837 has 8 divisors (see below), whose sum is σ = 142905600. Its totient is φ = 136157424.

The previous prime is 139522829. The next prime is 139522841. The reversal of 139522837 is 738225931.

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 139522837 - 2³ = 139522829 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 139522837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139522337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12739 + ... + 21007.

It is an arithmetic number, because the mean of its divisors is an integer number (17863200).

Almost surely, 2^139522837 is an apocalyptic number.

It is an amenable number.

139522837 is a deficient number, since it is larger than the sum of its proper divisors (3382763).

139522837 is an equidigital number, since it uses as much as digits as its factorization.

139522837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8675.

The product of its digits is 90720, while the sum is 40.

The square root of 139522837 is about 11811.9785387546. The cubic root of 139522837 is about 518.6588182119.

The spelling of 139522837 in words is "one hundred thirty-nine million, five hundred twenty-two thousand, eight hundred thirty-seven".