404012345 has 24 divisors (see below), whose sum is σ = 540903552. Its totient is φ = 289412640.

The previous prime is 404012341. The next prime is 404012347. The reversal of 404012345 is 543210404.

It is not a de Polignac number, because 404012345 - 2² = 404012341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404012345.

It is not an unprimeable number, because it can be changed into a prime (404012341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35552 + ... + 45518.

It is an arithmetic number, because the mean of its divisors is an integer number (22537648).

Almost surely, 2^404012345 is an apocalyptic number.

It is an amenable number.

404012345 is a deficient number, since it is larger than the sum of its proper divisors (136891207).

404012345 is a wasteful number, since it uses less digits than its factorization.

404012345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10061 (or 10050 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 404012345 is about 20100.0583332487. The cubic root of 404012345 is about 739.2617088742.

Adding to 404012345 its reverse (543210404), we get a palindrome (947222749).

The spelling of 404012345 in words is "four hundred four million, twelve thousand, three hundred forty-five".