404253999 has 24 divisors (see below), whose sum is σ = 624667680. Its totient is φ = 251025408.

The previous prime is 404253991. The next prime is 404254009. The reversal of 404253999 is 999352404.

It is a happy number.

It is not a de Polignac number, because 404253999 - 2³ = 404253991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404253991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1222 + ... + 28460.

It is an arithmetic number, because the mean of its divisors is an integer number (26027820).

Almost surely, 2^404253999 is an apocalyptic number.

404253999 is a deficient number, since it is larger than the sum of its proper divisors (220413681).

404253999 is a wasteful number, since it uses less digits than its factorization.

404253999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27359 (or 27356 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 404253999 is about 20106.0687107152. The cubic root of 404253999 is about 739.4090723108.

The spelling of 404253999 in words is "four hundred four million, two hundred fifty-three thousand, nine hundred ninety-nine".