405403263 has 24 divisors (see below), whose sum is σ = 590653440. Its totient is φ = 267941520.

The previous prime is 405403231. The next prime is 405403279. The reversal of 405403263 is 362304504.

It is not a de Polignac number, because 405403263 - 2⁵ = 405403231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405403363) 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, 875370 + ... + 875832.

It is an arithmetic number, because the mean of its divisors is an integer number (24610560).

Almost surely, 2^405403263 is an apocalyptic number.

405403263 is a deficient number, since it is larger than the sum of its proper divisors (185250177).

405403263 is a wasteful number, since it uses less digits than its factorization.

405403263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1096 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 405403263 is about 20134.6284544811. The cubic root of 405403263 is about 740.1091043172.

Adding to 405403263 its reverse (362304504), we get a palindrome (767707767).

The spelling of 405403263 in words is "four hundred five million, four hundred three thousand, two hundred sixty-three".