11972943 has 24 divisors (see below), whose sum is σ = 18004896. Its totient is φ = 7660800.

The previous prime is 11972899. The next prime is 11972953. The reversal of 11972943 is 34927911.

It is not a de Polignac number, because 11972943 - 2¹³ = 11964751 is a prime.

It is a super-3 number, since 3×11972943³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11972898 and 11972907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11972953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25971 + ... + 26427.

It is an arithmetic number, because the mean of its divisors is an integer number (750204).

Almost surely, 2^11972943 is an apocalyptic number.

11972943 is a deficient number, since it is larger than the sum of its proper divisors (6031953).

11972943 is a wasteful number, since it uses less digits than its factorization.

11972943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 572 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 11972943 is about 3460.1940697019. The cubic root of 11972943 is about 228.7706493945.

The spelling of 11972943 in words is "eleven million, nine hundred seventy-two thousand, nine hundred forty-three".