404477997 has 48 divisors (see below), whose sum is σ = 701193024. Its totient is φ = 204960000.

The previous prime is 404477951. The next prime is 404477999. The reversal of 404477997 is 799774404.

It is not a de Polignac number, because 404477997 - 2¹¹ = 404475949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404477999) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63247 + ... + 69347.

It is an arithmetic number, because the mean of its divisors is an integer number (14608188).

Almost surely, 2^404477997 is an apocalyptic number.

It is an amenable number.

404477997 is a deficient number, since it is larger than the sum of its proper divisors (296715027).

404477997 is a wasteful number, since it uses less digits than its factorization.

404477997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6170 (or 6163 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 51.

The square root of 404477997 is about 20111.6383469870. The cubic root of 404477997 is about 739.5456164736.

The spelling of 404477997 in words is "four hundred four million, four hundred seventy-seven thousand, nine hundred ninety-seven".