2779393 has 4 divisors (see below), whose sum is σ = 2793988. Its totient is φ = 2764800.

The previous prime is 2779363. The next prime is 2779411. The reversal of 2779393 is 3939772.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2053489 + 725904 = 1433^2 + 852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2779393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2779303) 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, 7008 + ... + 7393.

It is an arithmetic number, because the mean of its divisors is an integer number (698497).

2^2779393 is an apocalyptic number.

It is an amenable number.

2779393 is a deficient number, since it is larger than the sum of its proper divisors (14595).

2779393 is a wasteful number, since it uses less digits than its factorization.

2779393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14594.

The product of its digits is 71442, while the sum is 40.

The square root of 2779393 is about 1667.1511629123. The cubic root of 2779393 is about 140.5993522279.

The spelling of 2779393 in words is "two million, seven hundred seventy-nine thousand, three hundred ninety-three".