1320920969 has 8 divisors (see below), whose sum is σ = 1355640000. Its totient is φ = 1286613072.

The previous prime is 1320920959. The next prime is 1320920977. The reversal of 1320920969 is 9690290231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320920969 is a prime.

It is a super-2 number, since 2×1320920969² = 3489664412687797922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320920929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96269 + ... + 109130.

It is an arithmetic number, because the mean of its divisors is an integer number (169455000).

Almost surely, 2^1320920969 is an apocalyptic number.

It is an amenable number.

1320920969 is a deficient number, since it is larger than the sum of its proper divisors (34719031).

1320920969 is a wasteful number, since it uses less digits than its factorization.

1320920969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205567.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 1320920969 is about 36344.4764579159. The cubic root of 1320920969 is about 1097.2163691977.

The spelling of 1320920969 in words is "one billion, three hundred twenty million, nine hundred twenty thousand, nine hundred sixty-nine".