855264799 has 2 divisors, whose sum is σ = 855264800. Its totient is φ = 855264798.

The previous prime is 855264737. The next prime is 855264829. The reversal of 855264799 is 997462558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 855264799 - 2¹⁹ = 854740511 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855264199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427632399 + 427632400.

It is an arithmetic number, because the mean of its divisors is an integer number (427632400).

Almost surely, 2^855264799 is an apocalyptic number.

855264799 is a deficient number, since it is larger than the sum of its proper divisors (1).

855264799 is an equidigital number, since it uses as much as digits as its factorization.

855264799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 55.

The square root of 855264799 is about 29244.9106512569. The cubic root of 855264799 is about 949.2199687519.

The spelling of 855264799 in words is "eight hundred fifty-five million, two hundred sixty-four thousand, seven hundred ninety-nine".