404163013 has 4 divisors (see below), whose sum is σ = 408329740. Its totient is φ = 399996288.

The previous prime is 404162999. The next prime is 404163029. The reversal of 404163013 is 310361404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87572164 + 316590849 = 9358^2 + 17793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404163013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404163413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083218 + ... + 2083411.

It is an arithmetic number, because the mean of its divisors is an integer number (102082435).

Almost surely, 2^404163013 is an apocalyptic number.

It is an amenable number.

404163013 is a deficient number, since it is larger than the sum of its proper divisors (4166727).

404163013 is an equidigital number, since it uses as much as digits as its factorization.

404163013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166726.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 404163013 is about 20103.8059332058. The cubic root of 404163013 is about 739.3535948784.

The spelling of 404163013 in words is "four hundred four million, one hundred sixty-three thousand, thirteen".