852909440 has 32 divisors (see below), whose sum is σ = 2038988160. Its totient is φ = 341163520.

The previous prime is 852909433. The next prime is 852909451. The reversal of 852909440 is 44909258.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×852909440² = 1454909025682227200, which contains 22 as substring.

It is a congruent number.

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, 665696 + ... + 666975.

It is an arithmetic number, because the mean of its divisors is an integer number (63718380).

Almost surely, 2^852909440 is an apocalyptic number.

852909440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

852909440 is an abundant number, since it is smaller than the sum of its proper divisors (1186078720).

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

852909440 is a wasteful number, since it uses less digits than its factorization.

852909440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332690 (or 1332678 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 852909440 is about 29204.6133341977. The cubic root of 852909440 is about 948.3477985843.

The spelling of 852909440 in words is "eight hundred fifty-two million, nine hundred nine thousand, four hundred forty".