10990919 has 4 divisors (see below), whose sum is σ = 11171160. Its totient is φ = 10810680.

The previous prime is 10990909. The next prime is 10990937. The reversal of 10990919 is 91909901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10990919 is a prime.

It is a super-2 number, since 2×10990919² = 241600600929122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10990909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90029 + ... + 90150.

It is an arithmetic number, because the mean of its divisors is an integer number (2792790).

Almost surely, 2^10990919 is an apocalyptic number.

10990919 is a deficient number, since it is larger than the sum of its proper divisors (180241).

10990919 is an equidigital number, since it uses as much as digits as its factorization.

10990919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180240.

The product of its (nonzero) digits is 6561, while the sum is 38.

The square root of 10990919 is about 3315.2554954332. The cubic root of 10990919 is about 222.3367923196.

The spelling of 10990919 in words is "ten million, nine hundred ninety thousand, nine hundred nineteen".