2115399 has 16 divisors (see below), whose sum is σ = 3314304. Its totient is φ = 1183200.

The previous prime is 2115397. The next prime is 2115427. The reversal of 2115399 is 9935112.

It is not a de Polignac number, because 2115399 - 2¹ = 2115397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2037 + ... + 2894.

It is an arithmetic number, because the mean of its divisors is an integer number (207144).

2^2115399 is an apocalyptic number.

2115399 is a deficient number, since it is larger than the sum of its proper divisors (1198905).

2115399 is a wasteful number, since it uses less digits than its factorization.

2115399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4958.

The product of its digits is 2430, while the sum is 30.

The square root of 2115399 is about 1454.4411297815. The cubic root of 2115399 is about 128.3701646501.

The spelling of 2115399 in words is "two million, one hundred fifteen thousand, three hundred ninety-nine".