157216839 has 8 divisors (see below), whose sum is σ = 225747312. Its totient is φ = 96748800.

The previous prime is 157216823. The next prime is 157216847. The reversal of 157216839 is 938612751.

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

It is not a de Polignac number, because 157216839 - 2⁴ = 157216823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157216839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157216879) 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, 2015562 + ... + 2015639.

It is an arithmetic number, because the mean of its divisors is an integer number (28218414).

Almost surely, 2^157216839 is an apocalyptic number.

157216839 is a deficient number, since it is larger than the sum of its proper divisors (68530473).

157216839 is a wasteful number, since it uses less digits than its factorization.

157216839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031217.

The product of its digits is 90720, while the sum is 42.

The square root of 157216839 is about 12538.6139186116. The cubic root of 157216839 is about 539.7173177522.

The spelling of 157216839 in words is "one hundred fifty-seven million, two hundred sixteen thousand, eight hundred thirty-nine".