2721379 has 4 divisors (see below), whose sum is σ = 2745576. Its totient is φ = 2697184.

The previous prime is 2721371. The next prime is 2721401. The reversal of 2721379 is 9731272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2721379 - 2³ = 2721371 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 2721379.

It is not an unprimeable number, because it can be changed into a prime (2721371) 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, 11929 + ... + 12154.

It is an arithmetic number, because the mean of its divisors is an integer number (686394).

2^2721379 is an apocalyptic number.

2721379 is a deficient number, since it is larger than the sum of its proper divisors (24197).

2721379 is a wasteful number, since it uses less digits than its factorization.

2721379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24196.

The product of its digits is 5292, while the sum is 31.

The square root of 2721379 is about 1649.6602680552. The cubic root of 2721379 is about 139.6142270867.

The spelling of 2721379 in words is "two million, seven hundred twenty-one thousand, three hundred seventy-nine".