2459721 has 16 divisors (see below), whose sum is σ = 3767040. Its totient is φ = 1411920.

The previous prime is 2459711. The next prime is 2459731. The reversal of 2459721 is 1279542.

It is an interprime number because it is at equal distance from previous prime (2459711) and next prime (2459731).

It is not a de Polignac number, because 2459721 - 2⁶ = 2459657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2459701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1335 + ... + 2588.

It is an arithmetic number, because the mean of its divisors is an integer number (235440).

2^2459721 is an apocalyptic number.

It is an amenable number.

2459721 is a deficient number, since it is larger than the sum of its proper divisors (1307319).

2459721 is a wasteful number, since it uses less digits than its factorization.

2459721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956.

The product of its digits is 5040, while the sum is 30.

The square root of 2459721 is about 1568.3497696624. The cubic root of 2459721 is about 134.9880373488.

The spelling of 2459721 in words is "two million, four hundred fifty-nine thousand, seven hundred twenty-one".