404749530 has 24 divisors (see below), whose sum is σ = 1052349012. Its totient is φ = 107933184.

The previous prime is 404749529. The next prime is 404749531. The reversal of 404749530 is 35947404.

404749530 is a `hidden beast` number, since 40 + 47 + 49 + 530 = 666.

It is an interprime number because it is at equal distance from previous prime (404749529) and next prime (404749531).

It can be written as a sum of positive squares in 2 ways, for example, as 373378329 + 31371201 = 19323^2 + 5601^2 .

It is not an unprimeable number, because it can be changed into a prime (404749531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2248519 + ... + 2248698.

Almost surely, 2^404749530 is an apocalyptic number.

404749530 is an abundant number, since it is smaller than the sum of its proper divisors (647599482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404749530 is a wasteful number, since it uses less digits than its factorization.

404749530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497230 (or 4497227 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 404749530 is about 20118.3878578777. The cubic root of 404749530 is about 739.7110693307.

The spelling of 404749530 in words is "four hundred four million, seven hundred forty-nine thousand, five hundred thirty".