157944449 has 8 divisors (see below), whose sum is σ = 171319680. Its totient is φ = 144744336.

The previous prime is 157944443. The next prime is 157944497. The reversal of 157944449 is 944449751.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157944449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157944443) 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, 41897 + ... + 45510.

It is an arithmetic number, because the mean of its divisors is an integer number (21414960).

Almost surely, 2^157944449 is an apocalyptic number.

It is an amenable number.

157944449 is a deficient number, since it is larger than the sum of its proper divisors (13375231).

157944449 is a wasteful number, since it uses less digits than its factorization.

157944449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87559.

The product of its digits is 725760, while the sum is 47.

The square root of 157944449 is about 12567.5951955814. The cubic root of 157944449 is about 540.5486524728.

The spelling of 157944449 in words is "one hundred fifty-seven million, nine hundred forty-four thousand, four hundred forty-nine".