11939769 has 6 divisors (see below), whose sum is σ = 17246346. Its totient is φ = 7959840.

The previous prime is 11939749. The next prime is 11939773. The reversal of 11939769 is 96793911.

It can be written as a sum of positive squares in only one way, i.e., 11594025 + 345744 = 3405^2 + 588^2 .

It is not a de Polignac number, because 11939769 - 2¹¹ = 11937721 is a prime.

It is a super-2 number, since 2×11939769² = 285116167546722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11939749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 663312 + ... + 663329.

It is an arithmetic number, because the mean of its divisors is an integer number (2874391).

Almost surely, 2^11939769 is an apocalyptic number.

It is an amenable number.

11939769 is a deficient number, since it is larger than the sum of its proper divisors (5306577).

11939769 is a wasteful number, since it uses less digits than its factorization.

11939769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326647 (or 1326644 counting only the distinct ones).

The product of its digits is 91854, while the sum is 45.

The square root of 11939769 is about 3455.3970828256. The cubic root of 11939769 is about 228.5591653949.

The spelling of 11939769 in words is "eleven million, nine hundred thirty-nine thousand, seven hundred sixty-nine".