2489951 has 6 divisors (see below), whose sum is σ = 2573856. Its totient is φ = 2408700.

The previous prime is 2489947. The next prime is 2489999. The reversal of 2489951 is 1599842.

It is not a de Polignac number, because 2489951 - 2² = 2489947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2486951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 335 + ... + 2256.

It is an arithmetic number, because the mean of its divisors is an integer number (428976).

2^2489951 is an apocalyptic number.

2489951 is a deficient number, since it is larger than the sum of its proper divisors (83905).

2489951 is an equidigital number, since it uses as much as digits as its factorization.

With its predecessor (2489950) it forms an eRAP, since the sums of their prime factors are consecutive (2652 and 2653).

2489951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653 (or 2622 counting only the distinct ones).

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

The square root of 2489951 is about 1577.9578574854. The cubic root of 2489951 is about 135.5387887481.

The spelling of 2489951 in words is "two million, four hundred eighty-nine thousand, nine hundred fifty-one".