2798729 has 2 divisors, whose sum is σ = 2798730. Its totient is φ = 2798728.

The previous prime is 2798713. The next prime is 2798737. The reversal of 2798729 is 9278972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1537600 + 1261129 = 1240^2 + 1123^2 .

It is a cyclic number.

It is not a de Polignac number, because 2798729 - 2⁴ = 2798713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2798729.

It is not a weakly prime, because it can be changed into another prime (2798759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1399364 + 1399365.

It is an arithmetic number, because the mean of its divisors is an integer number (1399365).

2^2798729 is an apocalyptic number.

It is an amenable number.

2798729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2798729 is an equidigital number, since it uses as much as digits as its factorization.

2798729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 44.

The square root of 2798729 is about 1672.9402260691. The cubic root of 2798729 is about 140.9246449453.

The spelling of 2798729 in words is "two million, seven hundred ninety-eight thousand, seven hundred twenty-nine".