404749892 has 18 divisors (see below), whose sum is σ = 712433358. Its totient is φ = 201200608.

The previous prime is 404749879. The next prime is 404749979. The reversal of 404749892 is 298947404.

It can be written as a sum of positive squares in only one way, i.e., 293573956 + 111175936 = 17134^2 + 10544^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 613859 + ... + 614517.

It is an arithmetic number, because the mean of its divisors is an integer number (39579631).

Almost surely, 2^404749892 is an apocalyptic number.

It is an amenable number.

404749892 is a deficient number, since it is larger than the sum of its proper divisors (307683466).

404749892 is an equidigital number, since it uses as much as digits as its factorization.

404749892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555 (or 894 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 404749892 is about 20118.3968546204. The cubic root of 404749892 is about 739.7112898583.

The spelling of 404749892 in words is "four hundred four million, seven hundred forty-nine thousand, eight hundred ninety-two".