11772239 has 4 divisors (see below), whose sum is σ = 12046056. Its totient is φ = 11498424.

The previous prime is 11772221. The next prime is 11772263. The reversal of 11772239 is 93227711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93227711 = 17 ⋅5483983.

It is a cyclic number.

It is not a de Polignac number, because 11772239 - 2⁸ = 11771983 is a prime.

It is a super-2 number, since 2×11772239² = 277171222146242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11772209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136844 + ... + 136929.

It is an arithmetic number, because the mean of its divisors is an integer number (3011514).

Almost surely, 2^11772239 is an apocalyptic number.

11772239 is a deficient number, since it is larger than the sum of its proper divisors (273817).

11772239 is an equidigital number, since it uses as much as digits as its factorization.

11772239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273816.

The product of its digits is 5292, while the sum is 32.

The square root of 11772239 is about 3431.0696582844. The cubic root of 11772239 is about 227.4851352845.

The spelling of 11772239 in words is "eleven million, seven hundred seventy-two thousand, two hundred thirty-nine".