2799847 has 2 divisors, whose sum is σ = 2799848. Its totient is φ = 2799846.

The previous prime is 2799833. The next prime is 2799857. The reversal of 2799847 is 7489972.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2799847 is a prime.

2799847 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2799797 and 2799806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2799817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1399923 + 1399924.

It is an arithmetic number, because the mean of its divisors is an integer number (1399924).

2^2799847 is an apocalyptic number.

2799847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2799847 is an equidigital number, since it uses as much as digits as its factorization.

2799847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 2799847 is about 1673.2743349493. The cubic root of 2799847 is about 140.9434073643.

It can be divided in two parts, 2799 and 847, that multiplied together give a triangular number (2370753 = T₂₁₇₇).

The spelling of 2799847 in words is "two million, seven hundred ninety-nine thousand, eight hundred forty-seven".