157879449 has 40 divisors (see below), whose sum is σ = 290283840. Its totient is φ = 83273184.

The previous prime is 157879433. The next prime is 157879483. The reversal of 157879449 is 944978751.

It is not a de Polignac number, because 157879449 - 2⁴ = 157879433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157879395 and 157879404.

It is not an unprimeable number, because it can be changed into a prime (157879499) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3339 + ... + 18080.

It is an arithmetic number, because the mean of its divisors is an integer number (7257096).

Almost surely, 2^157879449 is an apocalyptic number.

It is an amenable number.

157879449 is a deficient number, since it is larger than the sum of its proper divisors (132404391).

157879449 is a wasteful number, since it uses less digits than its factorization.

157879449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21451 (or 21442 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 157879449 is about 12565.0089136459. The cubic root of 157879449 is about 540.4744903573.

The spelling of 157879449 in words is "one hundred fifty-seven million, eight hundred seventy-nine thousand, four hundred forty-nine".