11994591 has 16 divisors (see below), whose sum is σ = 18724608. Its totient is φ = 6686400.

The previous prime is 11994583. The next prime is 11994599. The reversal of 11994591 is 19549911.

It is an interprime number because it is at equal distance from previous prime (11994583) and next prime (11994599).

It is not a de Polignac number, because 11994591 - 2³ = 11994583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11994599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6105 + ... + 7826.

It is an arithmetic number, because the mean of its divisors is an integer number (1170288).

Almost surely, 2^11994591 is an apocalyptic number.

11994591 is a deficient number, since it is larger than the sum of its proper divisors (6730017).

11994591 is a wasteful number, since it uses less digits than its factorization.

11994591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13982.

The product of its digits is 14580, while the sum is 39.

The square root of 11994591 is about 3463.3208052388. The cubic root of 11994591 is about 228.9084446780.

The spelling of 11994591 in words is "eleven million, nine hundred ninety-four thousand, five hundred ninety-one".