2164899 has 24 divisors (see below), whose sum is σ = 3359808. Its totient is φ = 1229440.

The previous prime is 2164859. The next prime is 2164901. The reversal of 2164899 is 9984612.

It is not a de Polignac number, because 2164899 - 2⁹ = 2164387 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 1 + 6⁵ + 4³ + 8⁷ + 9³ + 9⁵ .

2164899 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2164859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9424 + ... + 9650.

It is an arithmetic number, because the mean of its divisors is an integer number (139992).

2^2164899 is an apocalyptic number.

2164899 is a deficient number, since it is larger than the sum of its proper divisors (1194909).

2164899 is a wasteful number, since it uses less digits than its factorization.

2164899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 258 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 2164899 is about 1471.3595753588. The cubic root of 2164899 is about 129.3637351624.

It can be divided in two parts, 216 and 4899, that added together give a palindrome (5115).

The spelling of 2164899 in words is "two million, one hundred sixty-four thousand, eight hundred ninety-nine".