11992371 has 4 divisors (see below), whose sum is σ = 15989832. Its totient is φ = 7994912.

The previous prime is 11992349. The next prime is 11992373. The reversal of 11992371 is 17329911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11992371 - 2⁵ = 11992339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11992373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1998726 + ... + 1998731.

It is an arithmetic number, because the mean of its divisors is an integer number (3997458).

Almost surely, 2^11992371 is an apocalyptic number.

11992371 is a deficient number, since it is larger than the sum of its proper divisors (3997461).

11992371 is an equidigital number, since it uses as much as digits as its factorization.

11992371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997460.

The product of its digits is 3402, while the sum is 33.

The square root of 11992371 is about 3463.0002887670. Note that the first 3 decimals coincide. The cubic root of 11992371 is about 228.8943214202.

It can be divided in two parts, 1199 and 2371, that added together give a triangular number (3570 = T₈₄).

The spelling of 11992371 in words is "eleven million, nine hundred ninety-two thousand, three hundred seventy-one".