404040740 has 24 divisors (see below), whose sum is σ = 871419192. Its totient is φ = 157248000.

The previous prime is 404040709. The next prime is 404040743. The reversal of 404040740 is 47040404.

It can be written as a sum of positive squares in 4 ways, for example, as 223622116 + 180418624 = 14954^2 + 13432^2 .

It is not an unprimeable number, because it can be changed into a prime (404040743) 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, 272261 + ... + 273740.

It is an arithmetic number, because the mean of its divisors is an integer number (36309133).

Almost surely, 2^404040740 is an apocalyptic number.

It is an amenable number.

404040740 is an abundant number, since it is smaller than the sum of its proper divisors (467378452).

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

404040740 is a wasteful number, since it uses less digits than its factorization.

404040740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546047 (or 546045 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 404040740 is about 20100.7646620719. The cubic root of 404040740 is about 739.2790275236.

The spelling of 404040740 in words is "four hundred four million, forty thousand, seven hundred forty".