802643994 has 24 divisors (see below), whose sum is σ = 1739998260. Its totient is φ = 267403968.

The previous prime is 802643983. The next prime is 802644019. The reversal of 802643994 is 499346208.

It can be written as a sum of positive squares in 2 ways, for example, as 717543369 + 85100625 = 26787^2 + 9225^2 .

It is a super-2 number, since 2×802643994² = 1288474762208544072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25534 + ... + 47510.

Almost surely, 2^802643994 is an apocalyptic number.

802643994 is an abundant number, since it is smaller than the sum of its proper divisors (937354266).

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

802643994 is a wasteful number, since it uses less digits than its factorization.

802643994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24014 (or 24011 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 802643994 is about 28330.9723447678. The cubic root of 802643994 is about 929.3393365398.

The spelling of 802643994 in words is "eight hundred two million, six hundred forty-three thousand, nine hundred ninety-four".