157793399 has 4 divisors (see below), whose sum is σ = 157967520. Its totient is φ = 157619280.

The previous prime is 157793387. The next prime is 157793401. The reversal of 157793399 is 993397751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157793399 - 2⁸ = 157793143 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 157793399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157733399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85694 + ... + 87515.

It is an arithmetic number, because the mean of its divisors is an integer number (39491880).

Almost surely, 2^157793399 is an apocalyptic number.

157793399 is a deficient number, since it is larger than the sum of its proper divisors (174121).

157793399 is an equidigital number, since it uses as much as digits as its factorization.

157793399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174120.

The product of its digits is 1607445, while the sum is 53.

The square root of 157793399 is about 12561.5842551806. The cubic root of 157793399 is about 540.3762798086.

The spelling of 157793399 in words is "one hundred fifty-seven million, seven hundred ninety-three thousand, three hundred ninety-nine".