157423889 has 8 divisors (see below), whose sum is σ = 180123840. Its totient is φ = 134776656.

The previous prime is 157423883. The next prime is 157423907. The reversal of 157423889 is 988324751.

It is a happy number.

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

It is not a de Polignac number, because 157423889 - 2²⁰ = 156375313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157423883) 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, 6554 + ... + 18915.

It is an arithmetic number, because the mean of its divisors is an integer number (22515480).

Almost surely, 2^157423889 is an apocalyptic number.

It is an amenable number.

157423889 is a deficient number, since it is larger than the sum of its proper divisors (22699951).

157423889 is an equidigital number, since it uses as much as digits as its factorization.

157423889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26359.

The product of its digits is 483840, while the sum is 47.

The square root of 157423889 is about 12546.8676967600. The cubic root of 157423889 is about 539.9541444829.

The spelling of 157423889 in words is "one hundred fifty-seven million, four hundred twenty-three thousand, eight hundred eighty-nine".