405434263 has 4 divisors (see below), whose sum is σ = 436621528. Its totient is φ = 374247000.

The previous prime is 405434261. The next prime is 405434273. The reversal of 405434263 is 362434504.

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

It is a cyclic number.

It is not a de Polignac number, because 405434263 - 2¹ = 405434261 is a prime.

It is a super-2 number, since 2×405434263² = 328753883228706338, 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 (405434261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15593613 + ... + 15593638.

It is an arithmetic number, because the mean of its divisors is an integer number (109155382).

Almost surely, 2^405434263 is an apocalyptic number.

405434263 is a deficient number, since it is larger than the sum of its proper divisors (31187265).

405434263 is a wasteful number, since it uses less digits than its factorization.

405434263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31187264.

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 405434263 is about 20135.3982577947. The cubic root of 405434263 is about 740.1279684948.

Adding to 405434263 its reverse (362434504), we get a palindrome (767868767).

The spelling of 405434263 in words is "four hundred five million, four hundred thirty-four thousand, two hundred sixty-three".