2489939 has 8 divisors (see below), whose sum is σ = 2656800. Its totient is φ = 2325376.

The previous prime is 2489933. The next prime is 2489947. The reversal of 2489939 is 9399842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2489939 - 2⁴ = 2489923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2489939.

It is not an unprimeable number, because it can be changed into a prime (2489933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042 + ... + 3024.

It is an arithmetic number, because the mean of its divisors is an integer number (332100).

2^2489939 is an apocalyptic number.

2489939 is a deficient number, since it is larger than the sum of its proper divisors (166861).

2489939 is a wasteful number, since it uses less digits than its factorization.

2489939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149.

The product of its digits is 139968, while the sum is 44.

The square root of 2489939 is about 1577.9540550979. The cubic root of 2489939 is about 135.5385710104.

Subtracting 2489939 from its reverse (9399842), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2489939 in words is "two million, four hundred eighty-nine thousand, nine hundred thirty-nine".