2798621279 has 4 divisors (see below), whose sum is σ = 2800301784. Its totient is φ = 2796940776.

The previous prime is 2798621269. The next prime is 2798621291. The reversal of 2798621279 is 9721268972.

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 2798621279 - 2²⁴ = 2781844063 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 2798621279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798621269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837752 + ... + 841085.

It is an arithmetic number, because the mean of its divisors is an integer number (700075446).

Almost surely, 2^2798621279 is an apocalyptic number.

2798621279 is a deficient number, since it is larger than the sum of its proper divisors (1680505).

2798621279 is a wasteful number, since it uses less digits than its factorization.

2798621279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680504.

The product of its digits is 1524096, while the sum is 53.

The square root of 2798621279 is about 52901.9969282824. The cubic root of 2798621279 is about 1409.2283689379.

The spelling of 2798621279 in words is "two billion, seven hundred ninety-eight million, six hundred twenty-one thousand, two hundred seventy-nine".