2199015 has 64 divisors (see below), whose sum is σ = 4838400. Its totient is φ = 922752.

The previous prime is 2198981. The next prime is 2199061. The reversal of 2199015 is 5109912.

It is a happy number.

It is not a de Polignac number, because 2199015 - 2⁷ = 2198887 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2199015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12196 + ... + 12374.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2^2199015 is an apocalyptic number.

2199015 is an abundant number, since it is smaller than the sum of its proper divisors (2639385).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2199015 is a wasteful number, since it uses less digits than its factorization.

2199015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 207 counting only the distinct ones).

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

The square root of 2199015 is about 1482.9076168123. The cubic root of 2199015 is about 130.0397314455.

The spelling of 2199015 in words is "two million, one hundred ninety-nine thousand, fifteen".