523991434 has 8 divisors (see below), whose sum is σ = 793769508. Its totient is φ = 259401600.

The previous prime is 523991407. The next prime is 523991441. The reversal of 523991434 is 434199325.

It can be written as a sum of positive squares in 2 ways, for example, as 460231209 + 63760225 = 21453^2 + 7985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296807 + ... + 1297210.

Almost surely, 2^523991434 is an apocalyptic number.

523991434 is a deficient number, since it is larger than the sum of its proper divisors (269778074).

523991434 is a wasteful number, since it uses less digits than its factorization.

523991434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594120.

The product of its digits is 116640, while the sum is 40.

The square root of 523991434 is about 22890.8591800308. The cubic root of 523991434 is about 806.1974047857.

It can be divided in two parts, 523991 and 434, that added together give a palindrome (524425).

The spelling of 523991434 in words is "five hundred twenty-three million, nine hundred ninety-one thousand, four hundred thirty-four".