11971493 has 8 divisors (see below), whose sum is σ = 12225312. Its totient is φ = 11720016.

The previous prime is 11971469. The next prime is 11971499. The reversal of 11971493 is 39417911.

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 11971493 - 2¹⁴ = 11955109 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 (11971499) 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, 12746 + ... + 13652.

It is an arithmetic number, because the mean of its divisors is an integer number (1528164).

Almost surely, 2^11971493 is an apocalyptic number.

It is an amenable number.

11971493 is a deficient number, since it is larger than the sum of its proper divisors (253819).

11971493 is an equidigital number, since it uses as much as digits as its factorization.

11971493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171.

The product of its digits is 6804, while the sum is 35.

The square root of 11971493 is about 3459.9845375377. The cubic root of 11971493 is about 228.7614138253.

The spelling of 11971493 in words is "eleven million, nine hundred seventy-one thousand, four hundred ninety-three".