11391922 has 4 divisors (see below), whose sum is σ = 17087886. Its totient is φ = 5695960.

The previous prime is 11391899. The next prime is 11391931. The reversal of 11391922 is 22919311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22919311 = 521 ⋅43991.

It can be written as a sum of positive squares in only one way, i.e., 9054081 + 2337841 = 3009^2 + 1529^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2847979 + ... + 2847982.

Almost surely, 2^11391922 is an apocalyptic number.

11391922 is a deficient number, since it is larger than the sum of its proper divisors (5695964).

11391922 is an equidigital number, since it uses as much as digits as its factorization.

11391922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695963.

The product of its digits is 972, while the sum is 28.

The square root of 11391922 is about 3375.1921426787. The cubic root of 11391922 is about 225.0085395936.

The spelling of 11391922 in words is "eleven million, three hundred ninety-one thousand, nine hundred twenty-two".