869789693 has 2 divisors, whose sum is σ = 869789694. Its totient is φ = 869789692.

The previous prime is 869789677. The next prime is 869789719. The reversal of 869789693 is 396987968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 831572569 + 38217124 = 28837^2 + 6182^2 .

It is a cyclic number.

It is not a de Polignac number, because 869789693 - 2⁴ = 869789677 is a prime.

It is a super-2 number, since 2×869789693² = 1513068220098068498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869789603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434894846 + 434894847.

It is an arithmetic number, because the mean of its divisors is an integer number (434894847).

Almost surely, 2^869789693 is an apocalyptic number.

It is an amenable number.

869789693 is a deficient number, since it is larger than the sum of its proper divisors (1).

869789693 is an equidigital number, since it uses as much as digits as its factorization.

869789693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 65.

The square root of 869789693 is about 29492.1971545017. The cubic root of 869789693 is about 954.5633423111.

The spelling of 869789693 in words is "eight hundred sixty-nine million, seven hundred eighty-nine thousand, six hundred ninety-three".