404551263 has 4 divisors (see below), whose sum is σ = 539401688. Its totient is φ = 269700840.

The previous prime is 404551243. The next prime is 404551283. The reversal of 404551263 is 362155404.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (404551243) and next prime (404551283).

It is not a de Polignac number, because 404551263 - 2¹² = 404547167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404551263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404551243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67425208 + ... + 67425213.

It is an arithmetic number, because the mean of its divisors is an integer number (134850422).

Almost surely, 2^404551263 is an apocalyptic number.

404551263 is a deficient number, since it is larger than the sum of its proper divisors (134850425).

404551263 is a wasteful number, since it uses less digits than its factorization.

404551263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134850424.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 404551263 is about 20113.4597471444. The cubic root of 404551263 is about 739.5902668447.

The spelling of 404551263 in words is "four hundred four million, five hundred fifty-one thousand, two hundred sixty-three".