11984691 has 4 divisors (see below), whose sum is σ = 15979592. Its totient is φ = 7989792.

The previous prime is 11984683. The next prime is 11984699. The reversal of 11984691 is 19648911.

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

It is an interprime number because it is at equal distance from previous prime (11984683) and next prime (11984699).

It is not a de Polignac number, because 11984691 - 2³ = 11984683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11984699) 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, 1997446 + ... + 1997451.

It is an arithmetic number, because the mean of its divisors is an integer number (3994898).

Almost surely, 2^11984691 is an apocalyptic number.

11984691 is a deficient number, since it is larger than the sum of its proper divisors (3994901).

11984691 is an equidigital number, since it uses as much as digits as its factorization.

11984691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994900.

The product of its digits is 15552, while the sum is 39.

The square root of 11984691 is about 3461.8912461254. The cubic root of 11984691 is about 228.8454491335.

The spelling of 11984691 in words is "eleven million, nine hundred eighty-four thousand, six hundred ninety-one".