2489591 has 4 divisors (see below), whose sum is σ = 2681112. Its totient is φ = 2298072.

The previous prime is 2489573. The next prime is 2489603. The reversal of 2489591 is 1959842.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1959842 = 2 ⋅979921.

It is a cyclic number.

It is not a de Polignac number, because 2489591 - 2¹⁰ = 2488567 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95741 + ... + 95766.

It is an arithmetic number, because the mean of its divisors is an integer number (670278).

2^2489591 is an apocalyptic number.

2489591 is a deficient number, since it is larger than the sum of its proper divisors (191521).

2489591 is a wasteful number, since it uses less digits than its factorization.

2489591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191520.

The product of its digits is 25920, while the sum is 38.

The square root of 2489591 is about 1577.8437818745. The cubic root of 2489591 is about 135.5322563149.

The spelling of 2489591 in words is "two million, four hundred eighty-nine thousand, five hundred ninety-one".