436694489 has 32 divisors (see below), whose sum is σ = 567336960. Its totient is φ = 326188800.

The previous prime is 436694483. The next prime is 436694497. The reversal of 436694489 is 984496634.

It is not a de Polignac number, because 436694489 - 2²⁴ = 419917273 is a prime.

It is a super-2 number, since 2×436694489² = 381404153445942242, which contains 22 as substring.

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 436694489.

It is not an unprimeable number, because it can be changed into a prime (436694483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268922 + ... + 270540.

It is an arithmetic number, because the mean of its divisors is an integer number (17729280).

Almost surely, 2^436694489 is an apocalyptic number.

It is an amenable number.

436694489 is a deficient number, since it is larger than the sum of its proper divisors (130642471).

436694489 is a wasteful number, since it uses less digits than its factorization.

436694489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781.

The product of its digits is 4478976, while the sum is 53.

The square root of 436694489 is about 20897.2363962319. The cubic root of 436694489 is about 758.6810508687.

The spelling of 436694489 in words is "four hundred thirty-six million, six hundred ninety-four thousand, four hundred eighty-nine".