10997919 has 12 divisors (see below), whose sum is σ = 15969096. Its totient is φ = 7293552.

The previous prime is 10997911. The next prime is 10997927. The reversal of 10997919 is 91979901.

It is an interprime number because it is at equal distance from previous prime (10997911) and next prime (10997927).

It is not a de Polignac number, because 10997919 - 2³ = 10997911 is a prime.

It is a super-2 number, since 2×10997919² = 241908444661122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10997911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1329 + ... + 4874.

It is an arithmetic number, because the mean of its divisors is an integer number (1330758).

Almost surely, 2^10997919 is an apocalyptic number.

10997919 is the 1773-rd nonagonal number.

10997919 is a deficient number, since it is larger than the sum of its proper divisors (4971177).

10997919 is a wasteful number, since it uses less digits than its factorization.

10997919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6406 (or 6403 counting only the distinct ones).

The product of its (nonzero) digits is 45927, while the sum is 45.

The square root of 10997919 is about 3316.3110529623. The cubic root of 10997919 is about 222.3839836192.

The spelling of 10997919 in words is "ten million, nine hundred ninety-seven thousand, nine hundred nineteen".