2489895 has 12 divisors (see below), whose sum is σ = 4315896. Its totient is φ = 1327920.

The previous prime is 2489891. The next prime is 2489909. The reversal of 2489895 is 5989842.

It is not a de Polignac number, because 2489895 - 2² = 2489891 is a prime.

It is a super-2 number, since 2×2489895² = 12399154222050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 55331 = 2489895 / (2 + 4 + 8 + 9 + 8 + 9 + 5).

It is a d-powerful number, because it can be written as 2¹² + 4⁵ + 8² + 9² + 8² + 9⁶ + 5⁹ .

2489895 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2489895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489891) 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, 27621 + ... + 27710.

It is an arithmetic number, because the mean of its divisors is an integer number (359658).

2^2489895 is an apocalyptic number.

2489895 is a deficient number, since it is larger than the sum of its proper divisors (1826001).

2489895 is a wasteful number, since it uses less digits than its factorization.

2489895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55342 (or 55339 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 2489895 is about 1577.9401129320. The cubic root of 2489895 is about 135.5377726331.

The spelling of 2489895 in words is "two million, four hundred eighty-nine thousand, eight hundred ninety-five".