10998899 has 4 divisors (see below), whose sum is σ = 11477136. Its totient is φ = 10520664.

The previous prime is 10998857. The next prime is 10998907. The reversal of 10998899 is 99889901.

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

It is a cyclic number.

It is not a de Polignac number, because 10998899 - 2¹² = 10994803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10998899.

It is not an unprimeable number, because it can be changed into a prime (10998809) 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, 239084 + ... + 239129.

It is an arithmetic number, because the mean of its divisors is an integer number (2869284).

Almost surely, 2^10998899 is an apocalyptic number.

10998899 is a deficient number, since it is larger than the sum of its proper divisors (478237).

10998899 is an equidigital number, since it uses as much as digits as its factorization.

10998899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478236.

The product of its (nonzero) digits is 419904, while the sum is 53.

The square root of 10998899 is about 3316.4588042067. The cubic root of 10998899 is about 222.3905888031.

The spelling of 10998899 in words is "ten million, nine hundred ninety-eight thousand, eight hundred ninety-nine".