10988399 has 4 divisors (see below), whose sum is σ = 11089320. Its totient is φ = 10887480.

The previous prime is 10988363. The next prime is 10988401. The reversal of 10988399 is 99388901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99388901 = 4943 ⋅20107.

It is a cyclic number.

It is not a de Polignac number, because 10988399 - 2²⁰ = 9939823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10988309) 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, 50297 + ... + 50514.

It is an arithmetic number, because the mean of its divisors is an integer number (2772330).

Almost surely, 2^10988399 is an apocalyptic number.

10988399 is a deficient number, since it is larger than the sum of its proper divisors (100921).

10988399 is a wasteful number, since it uses less digits than its factorization.

10988399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100920.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 10988399 is about 3314.8754124401. The cubic root of 10988399 is about 222.3197985468.

The spelling of 10988399 in words is "ten million, nine hundred eighty-eight thousand, three hundred ninety-nine".