11938791 has 8 divisors (see below), whose sum is σ = 15999984. Its totient is φ = 7918400.

The previous prime is 11938781. The next prime is 11938793. The reversal of 11938791 is 19783911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11938791 - 2⁹ = 11938279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11938793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9510 + ... + 10691.

It is an arithmetic number, because the mean of its divisors is an integer number (1999998).

Almost surely, 2^11938791 is an apocalyptic number.

11938791 is a deficient number, since it is larger than the sum of its proper divisors (4061193).

11938791 is a wasteful number, since it uses less digits than its factorization.

11938791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20401.

The product of its digits is 13608, while the sum is 39.

The square root of 11938791 is about 3455.2555621835. The cubic root of 11938791 is about 228.5529247111.

The spelling of 11938791 in words is "eleven million, nine hundred thirty-eight thousand, seven hundred ninety-one".