404072747 has 18 divisors (see below), whose sum is σ = 453313692. Its totient is φ = 360001824.

The previous prime is 404072737. The next prime is 404072783. The reversal of 404072747 is 747270404.

It is not a de Polignac number, because 404072747 - 2⁴ = 404072731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404072707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 140708 + ... + 143550.

It is an arithmetic number, because the mean of its divisors is an integer number (25184094).

Almost surely, 2^404072747 is an apocalyptic number.

404072747 is a deficient number, since it is larger than the sum of its proper divisors (49240945).

404072747 is a wasteful number, since it uses less digits than its factorization.

404072747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927 (or 2885 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 35.

The square root of 404072747 is about 20101.5608100466. The cubic root of 404072747 is about 739.2985482276.

The spelling of 404072747 in words is "four hundred four million, seventy-two thousand, seven hundred forty-seven".