449641731 has 16 divisors (see below), whose sum is σ = 747456768. Its totient is φ = 233580000.

The previous prime is 449641727. The next prime is 449641739. The reversal of 449641731 is 137146944.

It is not a de Polignac number, because 449641731 - 2² = 449641727 is a prime.

It is a super-2 number, since 2×449641731² = 404355372513352722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 449641731.

It is not an unprimeable number, because it can be changed into a prime (449641739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973020 + ... + 973481.

It is an arithmetic number, because the mean of its divisors is an integer number (46716048).

Almost surely, 2^449641731 is an apocalyptic number.

449641731 is a deficient number, since it is larger than the sum of its proper divisors (297815037).

449641731 is a wasteful number, since it uses less digits than its factorization.

449641731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946522.

The product of its digits is 72576, while the sum is 39.

The square root of 449641731 is about 21204.7572728386. The cubic root of 449641731 is about 766.1060117963.

The spelling of 449641731 in words is "four hundred forty-nine million, six hundred forty-one thousand, seven hundred thirty-one".