2549439 has 24 divisors (see below), whose sum is σ = 4109040. Its totient is φ = 1513728.

The previous prime is 2549431. The next prime is 2549447. The reversal of 2549439 is 9349452.

It is an interprime number because it is at equal distance from previous prime (2549431) and next prime (2549447).

It is not a de Polignac number, because 2549439 - 2³ = 2549431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2549431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2469 + ... + 3345.

It is an arithmetic number, because the mean of its divisors is an integer number (171210).

2^2549439 is an apocalyptic number.

2549439 is a deficient number, since it is larger than the sum of its proper divisors (1559601).

2549439 is a wasteful number, since it uses less digits than its factorization.

2549439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919 (or 916 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2549439 is about 1596.6962766913. The cubic root of 2549439 is about 136.6097012904.

The spelling of 2549439 in words is "two million, five hundred forty-nine thousand, four hundred thirty-nine".