139797357 has 8 divisors (see below), whose sum is σ = 213024576. Its totient is φ = 79884192.

The previous prime is 139797349. The next prime is 139797379. The reversal of 139797357 is 753797931.

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

It is not a de Polignac number, because 139797357 - 2³ = 139797349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139797347) 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, 3328488 + ... + 3328529.

It is an arithmetic number, because the mean of its divisors is an integer number (26628072).

Almost surely, 2^139797357 is an apocalyptic number.

It is an amenable number.

139797357 is a deficient number, since it is larger than the sum of its proper divisors (73227219).

139797357 is an equidigital number, since it uses as much as digits as its factorization.

139797357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6657027.

The product of its digits is 1250235, while the sum is 51.

The square root of 139797357 is about 11823.5932355608. The cubic root of 139797357 is about 518.9987600254.

The spelling of 139797357 in words is "one hundred thirty-nine million, seven hundred ninety-seven thousand, three hundred fifty-seven".