404401393 has 8 divisors (see below), whose sum is σ = 441459936. Its totient is φ = 367392000.

The previous prime is 404401367. The next prime is 404401427. The reversal of 404401393 is 393104404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404401393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404401313) 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, 6130 + ... + 29092.

It is an arithmetic number, because the mean of its divisors is an integer number (55182492).

Almost surely, 2^404401393 is an apocalyptic number.

It is an amenable number.

404401393 is a deficient number, since it is larger than the sum of its proper divisors (37058543).

404401393 is a wasteful number, since it uses less digits than its factorization.

404401393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24575.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 404401393 is about 20109.7337873976. The cubic root of 404401393 is about 739.4989260647.

Adding to 404401393 its reverse (393104404), we get a palindrome (797505797).

The spelling of 404401393 in words is "four hundred four million, four hundred one thousand, three hundred ninety-three".