2489155 has 4 divisors (see below), whose sum is σ = 2986992. Its totient is φ = 1991320.

The previous prime is 2489147. The next prime is 2489159. The reversal of 2489155 is 5519842.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2489155 - 2³ = 2489147 is a prime.

It is a super-2 number, since 2×2489155² = 12391785228050, which contains 22 as substring.

It is a Duffinian number.

2489155 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2489155.

It is not an unprimeable number, because it can be changed into a prime (2489159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248911 + ... + 248920.

It is an arithmetic number, because the mean of its divisors is an integer number (746748).

2^2489155 is an apocalyptic number.

2489155 is a deficient number, since it is larger than the sum of its proper divisors (497837).

2489155 is an equidigital number, since it uses as much as digits as its factorization.

2489155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497836.

The product of its digits is 14400, while the sum is 34.

The square root of 2489155 is about 1577.7056125906. The cubic root of 2489155 is about 135.5243439692.

The spelling of 2489155 in words is "two million, four hundred eighty-nine thousand, one hundred fifty-five".