111002399 has 4 divisors (see below), whose sum is σ = 111560400. Its totient is φ = 110444400.

The previous prime is 111002383. The next prime is 111002407. The reversal of 111002399 is 993200111.

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 111002399 - 2⁴ = 111002383 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 (111002329) 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, 278702 + ... + 279099.

It is an arithmetic number, because the mean of its divisors is an integer number (27890100).

Almost surely, 2^111002399 is an apocalyptic number.

111002399 is a deficient number, since it is larger than the sum of its proper divisors (558001).

111002399 is an equidigital number, since it uses as much as digits as its factorization.

111002399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558000.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 111002399 is about 10535.7676037392. The cubic root of 111002399 is about 480.5930156109.

The spelling of 111002399 in words is "one hundred eleven million, two thousand, three hundred ninety-nine".