996939569 has 4 divisors (see below), whose sum is σ = 998710896. Its totient is φ = 995168244.

The previous prime is 996939521. The next prime is 996939617. The reversal of 996939569 is 965939699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 965939699 = 2539 ⋅380441.

It is an interprime number because it is at equal distance from previous prime (996939521) and next prime (996939617).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-996939569 is a prime.

It is a super-2 number, since 2×996939569² = 1987777008475811522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (996939269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884819 + ... + 885944.

It is an arithmetic number, because the mean of its divisors is an integer number (249677724).

Almost surely, 2^996939569 is an apocalyptic number.

It is an amenable number.

996939569 is a deficient number, since it is larger than the sum of its proper divisors (1771327).

996939569 is a wasteful number, since it uses less digits than its factorization.

996939569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771326.

The product of its digits is 31886460, while the sum is 65.

The square root of 996939569 is about 31574.3498587065. The cubic root of 996939569 is about 998.9788138672.

The spelling of 996939569 in words is "nine hundred ninety-six million, nine hundred thirty-nine thousand, five hundred sixty-nine".