865933902 has 40 divisors (see below), whose sum is σ = 1948406856. Its totient is φ = 288631512.

The previous prime is 865933897. The next prime is 865933909. The reversal of 865933902 is 209339568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865933909) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28368 + ... + 50364.

Almost surely, 2^865933902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 865933902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974203428).

865933902 is an abundant number, since it is smaller than the sum of its proper divisors (1082472954).

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

865933902 is an frugal number, since it uses more digits than its factorization.

865933902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22026 (or 22002 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 865933902 is about 29426.7548669574. The cubic root of 865933902 is about 953.1507215662.

The spelling of 865933902 in words is "eight hundred sixty-five million, nine hundred thirty-three thousand, nine hundred two".