404164039 has 4 divisors (see below), whose sum is σ = 418100760. Its totient is φ = 390227320.

The previous prime is 404164037. The next prime is 404164051. The reversal of 404164039 is 930461404.

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

It is a cyclic number.

It is not a de Polignac number, because 404164039 - 2¹ = 404164037 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 404164039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404164037) 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, 6968317 + ... + 6968374.

It is an arithmetic number, because the mean of its divisors is an integer number (104525190).

Almost surely, 2^404164039 is an apocalyptic number.

404164039 is a deficient number, since it is larger than the sum of its proper divisors (13936721).

404164039 is a wasteful number, since it uses less digits than its factorization.

404164039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13936720.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 404164039 is about 20103.8314507459. The cubic root of 404164039 is about 739.3542205139.

The spelling of 404164039 in words is "four hundred four million, one hundred sixty-four thousand, thirty-nine".