969949969 has 4 divisors (see below), whose sum is σ = 970040896. Its totient is φ = 969859044.

The previous prime is 969949963. The next prime is 969949973.

969949969 is nontrivially palindromic in base 10.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 969949969 - 2³ = 969949961 is a prime.

It is a super-2 number, since 2×969949969² = 1881605884726201922, 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 = 969949898 and 969949907.

It is not an unprimeable number, because it can be changed into a prime (969949961) 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, 26949 + ... + 51634.

It is an arithmetic number, because the mean of its divisors is an integer number (242510224).

Almost surely, 2^969949969 is an apocalyptic number.

It is an amenable number.

969949969 is a deficient number, since it is larger than the sum of its proper divisors (90927).

969949969 is a wasteful number, since it uses less digits than its factorization.

969949969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90926.

The product of its digits is 76527504, while the sum is 70.

The square root of 969949969 is about 31144.0197951388. The cubic root of 969949969 is about 989.8812798494.

The spelling of 969949969 in words is "nine hundred sixty-nine million, nine hundred forty-nine thousand, nine hundred sixty-nine".