2015199 has 12 divisors (see below), whose sum is σ = 3019016. Its totient is φ = 1343304.

The previous prime is 2015183. The next prime is 2015201. The reversal of 2015199 is 9915102.

It is a happy number.

It is not a de Polignac number, because 2015199 - 2⁴ = 2015183 is a prime.

It is a super-2 number, since 2×2015199² = 8122054019202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015149) 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, 3904 + ... + 4389.

2^2015199 is an apocalyptic number.

2015199 is a deficient number, since it is larger than the sum of its proper divisors (1003817).

2015199 is an frugal number, since it uses more digits than its factorization.

2015199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8308 (or 8296 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 2015199 is about 1419.5770496877. The cubic root of 2015199 is about 126.3104589033.

The spelling of 2015199 in words is "two million, fifteen thousand, one hundred ninety-nine".