404040747 has 16 divisors (see below), whose sum is σ = 613248768. Its totient is φ = 234226080.

The previous prime is 404040743. The next prime is 404040761. The reversal of 404040747 is 747040404.

It is not a de Polignac number, because 404040747 - 2² = 404040743 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 265408 + ... + 266925.

It is an arithmetic number, because the mean of its divisors is an integer number (38328048).

Almost surely, 2^404040747 is an apocalyptic number.

404040747 is a deficient number, since it is larger than the sum of its proper divisors (209208021).

404040747 is a wasteful number, since it uses less digits than its factorization.

404040747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532370.

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 404040747 is about 20100.7648361947. The cubic root of 404040747 is about 739.2790317930.

The spelling of 404040747 in words is "four hundred four million, forty thousand, seven hundred forty-seven".