404180389 has 16 divisors (see below), whose sum is σ = 432734400. Its totient is φ = 376186624.

The previous prime is 404180347. The next prime is 404180429. The reversal of 404180389 is 983081404.

It is a cyclic number.

It is not a de Polignac number, because 404180389 - 2⁹ = 404179877 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 (404180089) 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, 964422 + ... + 964840.

It is an arithmetic number, because the mean of its divisors is an integer number (27045900).

Almost surely, 2^404180389 is an apocalyptic number.

It is an amenable number.

404180389 is a deficient number, since it is larger than the sum of its proper divisors (28554011).

404180389 is a wasteful number, since it uses less digits than its factorization.

404180389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 404180389 is about 20104.2380855381. The cubic root of 404180389 is about 739.3641902929.

The spelling of 404180389 in words is "four hundred four million, one hundred eighty thousand, three hundred eighty-nine".