969998969 has 4 divisors (see below), whose sum is σ = 970680144. Its totient is φ = 969317796.

The previous prime is 969998917. The next prime is 969999011. The reversal of 969998969 is 969899969.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-969998969 is a prime.

It is a super-2 number, since 2×969998969² = 1881795999722125922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 969998896 and 969998905.

It is not an unprimeable number, because it can be changed into a prime (969998369) 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, 338447 + ... + 341300.

It is an arithmetic number, because the mean of its divisors is an integer number (242670036).

Almost surely, 2^969998969 is an apocalyptic number.

It is an amenable number.

969998969 is a deficient number, since it is larger than the sum of its proper divisors (681175).

969998969 is a wasteful number, since it uses less digits than its factorization.

969998969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681174.

The product of its digits is 153055008, while the sum is 74.

The square root of 969998969 is about 31144.8064530830. The cubic root of 969998969 is about 989.8979485325.

The spelling of 969998969 in words is "nine hundred sixty-nine million, nine hundred ninety-eight thousand, nine hundred sixty-nine".