11873971 has 4 divisors (see below), whose sum is σ = 11964744. Its totient is φ = 11783200.

The previous prime is 11873951. The next prime is 11873987. The reversal of 11873971 is 17937811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17937811 = 139 ⋅129049.

It is a cyclic number.

It is not a de Polignac number, because 11873971 - 2⁷ = 11873843 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 11873971.

It is not an unprimeable number, because it can be changed into a prime (11873921) 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, 45190 + ... + 45451.

It is an arithmetic number, because the mean of its divisors is an integer number (2991186).

Almost surely, 2^11873971 is an apocalyptic number.

11873971 is a deficient number, since it is larger than the sum of its proper divisors (90773).

11873971 is an equidigital number, since it uses as much as digits as its factorization.

11873971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90772.

The product of its digits is 10584, while the sum is 37.

The square root of 11873971 is about 3445.8628817758. The cubic root of 11873971 is about 228.1385417870.

The spelling of 11873971 in words is "eleven million, eight hundred seventy-three thousand, nine hundred seventy-one".