11972477 has 4 divisors (see below), whose sum is σ = 13060896. Its totient is φ = 10884060.

The previous prime is 11972473. The next prime is 11972491. The reversal of 11972477 is 77427911.

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 not a de Polignac number, because 11972477 - 2² = 11972473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11972477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11972473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544193 + ... + 544214.

It is an arithmetic number, because the mean of its divisors is an integer number (3265224).

Almost surely, 2^11972477 is an apocalyptic number.

It is an amenable number.

11972477 is a deficient number, since it is larger than the sum of its proper divisors (1088419).

11972477 is a wasteful number, since it uses less digits than its factorization.

11972477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088418.

The product of its digits is 24696, while the sum is 38.

The square root of 11972477 is about 3460.1267317831. The cubic root of 11972477 is about 228.7676813550.

The spelling of 11972477 in words is "eleven million, nine hundred seventy-two thousand, four hundred seventy-seven".