9890919 has 12 divisors (see below), whose sum is σ = 14341392. Its totient is φ = 6568800.

The previous prime is 9890917. The next prime is 9890941. The reversal of 9890919 is 9190989.

It is not a de Polignac number, because 9890919 - 2¹ = 9890917 is a prime.

It is a super-2 number, since 2×9890919² = 195660557329122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9890911) 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, 574 + ... + 4484.

It is an arithmetic number, because the mean of its divisors is an integer number (1195116).

Almost surely, 2^9890919 is an apocalyptic number.

9890919 is a deficient number, since it is larger than the sum of its proper divisors (4450473).

9890919 is a wasteful number, since it uses less digits than its factorization.

9890919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4198 (or 4195 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 9890919 is about 3144.9831478086. The cubic root of 9890919 is about 214.6572436592.

The spelling of 9890919 in words is "nine million, eight hundred ninety thousand, nine hundred nineteen".