449431357 has 4 divisors (see below), whose sum is σ = 464929020. Its totient is φ = 433933696.

The previous prime is 449431331. The next prime is 449431421. The reversal of 449431357 is 753134944.

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

It can be written as a sum of positive squares in 2 ways, for example, as 292204836 + 157226521 = 17094^2 + 12539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449431357 is a prime.

It is a super-2 number, since 2×449431357² = 403977089309722898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449431327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7748788 + ... + 7748845.

It is an arithmetic number, because the mean of its divisors is an integer number (116232255).

Almost surely, 2^449431357 is an apocalyptic number.

It is an amenable number.

449431357 is a deficient number, since it is larger than the sum of its proper divisors (15497663).

449431357 is a wasteful number, since it uses less digits than its factorization.

449431357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15497662.

The product of its digits is 181440, while the sum is 40.

The square root of 449431357 is about 21199.7961546804. The cubic root of 449431357 is about 765.9865137479.

The spelling of 449431357 in words is "four hundred forty-nine million, four hundred thirty-one thousand, three hundred fifty-seven".