11972849 has 4 divisors (see below), whose sum is σ = 13683264. Its totient is φ = 10262436.

The previous prime is 11972837. The next prime is 11972899. The reversal of 11972849 is 94827911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11972849 - 2⁸ = 11972593 is a prime.

It is a super-2 number, since 2×11972849² = 286698226353602, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11972899) 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, 855197 + ... + 855210.

It is an arithmetic number, because the mean of its divisors is an integer number (3420816).

Almost surely, 2^11972849 is an apocalyptic number.

It is an amenable number.

11972849 is a deficient number, since it is larger than the sum of its proper divisors (1710415).

11972849 is an equidigital number, since it uses as much as digits as its factorization.

11972849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710414.

The product of its digits is 36288, while the sum is 41.

The square root of 11972849 is about 3460.1804866220. The cubic root of 11972849 is about 228.7700506975.

It can be divided in two parts, 11972 and 849, that added together give a palindrome (12821).

The spelling of 11972849 in words is "eleven million, nine hundred seventy-two thousand, eight hundred forty-nine".