969121969 has 16 divisors (see below), whose sum is σ = 1018533376. Its totient is φ = 920937600.

The previous prime is 969121949. The next prime is 969121987.

969121969 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 969121969 - 2¹⁹ = 968597681 is a prime.

It is a super-2 number, since 2×969121969² = 1878394781596873922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (969121949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 948679 + ... + 949699.

It is an arithmetic number, because the mean of its divisors is an integer number (63658336).

Almost surely, 2^969121969 is an apocalyptic number.

It is an amenable number.

969121969 is a deficient number, since it is larger than the sum of its proper divisors (49411407).

969121969 is a wasteful number, since it uses less digits than its factorization.

969121969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576.

The product of its digits is 472392, while the sum is 52.

The square root of 969121969 is about 31130.7238752972. The cubic root of 969121969 is about 989.5995281919.

The spelling of 969121969 in words is "nine hundred sixty-nine million, one hundred twenty-one thousand, nine hundred sixty-nine".