11921693 has 8 divisors (see below), whose sum is σ = 13957440. Its totient is φ = 9969120.

The previous prime is 11921687. The next prime is 11921699. The reversal of 11921693 is 39612911.

11921693 = T₇₄₂ + T₇₄₃ + ... + T₇₈₂.

It is an interprime number because it is at equal distance from previous prime (11921687) and next prime (11921699).

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

It is not a de Polignac number, because 11921693 - 2⁴ = 11921677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11921699) 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, 20483 + ... + 21056.

It is an arithmetic number, because the mean of its divisors is an integer number (1744680).

Almost surely, 2^11921693 is an apocalyptic number.

It is an amenable number.

11921693 is a deficient number, since it is larger than the sum of its proper divisors (2035747).

11921693 is an equidigital number, since it uses as much as digits as its factorization.

11921693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41587.

The product of its digits is 2916, while the sum is 32.

The square root of 11921693 is about 3452.7804737631. The cubic root of 11921693 is about 228.4437661178.

It can be divided in two parts, 119 and 21693, that added together give a palindrome (21812).

The spelling of 11921693 in words is "eleven million, nine hundred twenty-one thousand, six hundred ninety-three".