2791399 has 4 divisors (see below), whose sum is σ = 3006136. Its totient is φ = 2576664.

The previous prime is 2791387. The next prime is 2791409. The reversal of 2791399 is 9931972.

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 2791399 - 2⁵ = 2791367 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 (2791339) 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, 107349 + ... + 107374.

It is an arithmetic number, because the mean of its divisors is an integer number (751534).

2^2791399 is an apocalyptic number.

2791399 is a deficient number, since it is larger than the sum of its proper divisors (214737).

2791399 is a wasteful number, since it uses less digits than its factorization.

2791399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214736.

The product of its digits is 30618, while the sum is 40.

The square root of 2791399 is about 1670.7480360605. The cubic root of 2791399 is about 140.8015080062.

The spelling of 2791399 in words is "two million, seven hundred ninety-one thousand, three hundred ninety-nine".