11487791 has 8 divisors (see below), whose sum is σ = 13309344. Its totient is φ = 9711360.

The previous prime is 11487769. The next prime is 11487793. The reversal of 11487791 is 19778411.

It is a happy number.

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 11487791 - 2²² = 7293487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11487793) 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, 10730 + ... + 11751.

It is an arithmetic number, because the mean of its divisors is an integer number (1663668).

Almost surely, 2^11487791 is an apocalyptic number.

11487791 is a deficient number, since it is larger than the sum of its proper divisors (1821553).

11487791 is an equidigital number, since it uses as much as digits as its factorization.

11487791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22561.

The product of its digits is 14112, while the sum is 38.

The square root of 11487791 is about 3389.3643946911. The cubic root of 11487791 is about 225.6379655331.

The spelling of 11487791 in words is "eleven million, four hundred eighty-seven thousand, seven hundred ninety-one".