404253253 has 4 divisors (see below), whose sum is σ = 425529760. Its totient is φ = 382976748.

The previous prime is 404253233. The next prime is 404253263. The reversal of 404253253 is 352352404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404253253 is a prime.

It is a super-2 number, since 2×404253253² = 326841385122164018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404253233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10638225 + ... + 10638262.

It is an arithmetic number, because the mean of its divisors is an integer number (106382440).

Almost surely, 2^404253253 is an apocalyptic number.

It is an amenable number.

404253253 is a deficient number, since it is larger than the sum of its proper divisors (21276507).

404253253 is a wasteful number, since it uses less digits than its factorization.

404253253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21276506.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 404253253 is about 20106.0501590939. The cubic root of 404253253 is about 739.4086174817.

The spelling of 404253253 in words is "four hundred four million, two hundred fifty-three thousand, two hundred fifty-three".