11922309 has 48 divisors (see below), whose sum is σ = 21012992. Its totient is φ = 6613488.

The previous prime is 11922301. The next prime is 11922341. The reversal of 11922309 is 90322911.

It is not a de Polignac number, because 11922309 - 2³ = 11922301 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11922301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73062 + ... + 73224.

Almost surely, 2^11922309 is an apocalyptic number.

It is an amenable number.

11922309 is a deficient number, since it is larger than the sum of its proper divisors (9090683).

11922309 is an equidigital number, since it uses as much as digits as its factorization.

11922309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 11922309 is about 3452.8696760810. The cubic root of 11922309 is about 228.4477006523.

The spelling of 11922309 in words is "eleven million, nine hundred twenty-two thousand, three hundred nine".