802861389 has 20 divisors (see below), whose sum is σ = 1308368160. Its totient is φ = 486582120.

The previous prime is 802861387. The next prime is 802861399. The reversal of 802861389 is 983168208.

802861389 is a `hidden beast` number, since 8 + 0 + 28 + 613 + 8 + 9 = 666.

It is not a de Polignac number, because 802861389 - 2¹ = 802861387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802861387) 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, 449649 + ... + 451430.

It is an arithmetic number, because the mean of its divisors is an integer number (65418408).

Almost surely, 2^802861389 is an apocalyptic number.

It is an amenable number.

802861389 is a deficient number, since it is larger than the sum of its proper divisors (505506771).

802861389 is a wasteful number, since it uses less digits than its factorization.

802861389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901102 (or 901093 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 802861389 is about 28334.8087870732. The cubic root of 802861389 is about 929.4232323845.

The spelling of 802861389 in words is "eight hundred two million, eight hundred sixty-one thousand, three hundred eighty-nine".