449731157 has 2 divisors, whose sum is σ = 449731158. Its totient is φ = 449731156.

The previous prime is 449731127. The next prime is 449731171. The reversal of 449731157 is 751137944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447787921 + 1943236 = 21161^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 449731157 - 2⁸ = 449730901 is a prime.

It is a super-2 number, since 2×449731157² = 404516227153117298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449731127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224865578 + 224865579.

It is an arithmetic number, because the mean of its divisors is an integer number (224865579).

Almost surely, 2^449731157 is an apocalyptic number.

It is an amenable number.

449731157 is a deficient number, since it is larger than the sum of its proper divisors (1).

449731157 is an equidigital number, since it uses as much as digits as its factorization.

449731157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 449731157 is about 21206.8657986040. The cubic root of 449731157 is about 766.1567968623.

The spelling of 449731157 in words is "four hundred forty-nine million, seven hundred thirty-one thousand, one hundred fifty-seven".