449747431 has 8 divisors (see below), whose sum is σ = 524487200. Its totient is φ = 385497504.

The previous prime is 449747413. The next prime is 449747447. The reversal of 449747431 is 134747944.

It is not a de Polignac number, because 449747431 - 2⁷ = 449747303 is a prime.

It is a super-2 number, since 2×449747431² = 404545503382199522, 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 (449747401) 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, 655266 + ... + 655951.

It is an arithmetic number, because the mean of its divisors is an integer number (65560900).

Almost surely, 2^449747431 is an apocalyptic number.

449747431 is a deficient number, since it is larger than the sum of its proper divisors (74739769).

449747431 is an equidigital number, since it uses as much as digits as its factorization.

449747431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311238 (or 1311224 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 449747431 is about 21207.2494916243. The cubic root of 449747431 is about 766.1660381502.

The spelling of 449747431 in words is "four hundred forty-nine million, seven hundred forty-seven thousand, four hundred thirty-one".