404500253 has 12 divisors (see below), whose sum is σ = 430253280. Its totient is φ = 379234800.

The previous prime is 404500249. The next prime is 404500259. The reversal of 404500253 is 352005404.

It is not a de Polignac number, because 404500253 - 2² = 404500249 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 (404500259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192776 + ... + 194862.

It is an arithmetic number, because the mean of its divisors is an integer number (35854440).

Almost surely, 2^404500253 is an apocalyptic number.

It is an amenable number.

404500253 is a deficient number, since it is larger than the sum of its proper divisors (25753027).

404500253 is a wasteful number, since it uses less digits than its factorization.

404500253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308 (or 2207 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 404500253 is about 20112.1916508371. The cubic root of 404500253 is about 739.5591804792.

Adding to 404500253 its reverse (352005404), we get a palindrome (756505657).

The spelling of 404500253 in words is "four hundred four million, five hundred thousand, two hundred fifty-three".