439898436 has 36 divisors (see below), whose sum is σ = 1112874672. Its totient is φ = 146512944.

The previous prime is 439898413. The next prime is 439898447. The reversal of 439898436 is 634898934.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47091 + ... + 55653.

Almost surely, 2^439898436 is an apocalyptic number.

It is an amenable number.

439898436 is an abundant number, since it is smaller than the sum of its proper divisors (672976236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

439898436 is a wasteful number, since it uses less digits than its factorization.

439898436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000 (or 9995 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 439898436 is about 20973.7558868220. The cubic root of 439898436 is about 760.5319659726.

It can be divided in two parts, 43989 and 8436, that added together give a palindrome (52425).

The spelling of 439898436 in words is "four hundred thirty-nine million, eight hundred ninety-eight thousand, four hundred thirty-six".