436868644 has 12 divisors (see below), whose sum is σ = 790883100. Its totient is φ = 210902048.

The previous prime is 436868639. The next prime is 436868651. The reversal of 436868644 is 446868634.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 341806144 + 95062500 = 18488^2 + 9750^2 .

It is a super-2 number, since 2×436868644² = 381708424220797472, which contains 22 as substring.

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, 1882939 + ... + 1883170.

It is an arithmetic number, because the mean of its divisors is an integer number (65906925).

Almost surely, 2^436868644 is an apocalyptic number.

It is an amenable number.

436868644 is a deficient number, since it is larger than the sum of its proper divisors (354014456).

436868644 is a wasteful number, since it uses less digits than its factorization.

436868644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766142 (or 3766140 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 49.

The square root of 436868644 is about 20901.4029194215. The cubic root of 436868644 is about 758.7818921825.

The spelling of 436868644 in words is "four hundred thirty-six million, eight hundred sixty-eight thousand, six hundred forty-four".