6400088791 has 2 divisors, whose sum is σ = 6400088792. Its totient is φ = 6400088790.

The previous prime is 6400088743. The next prime is 6400088803. The reversal of 6400088791 is 1978800046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6400088791 - 2²⁹ = 5863217879 is a prime.

It is a super-2 number, since 2×6400088791² = 81922273065367683362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6400088711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200044395 + 3200044396.

It is an arithmetic number, because the mean of its divisors is an integer number (3200044396).

Almost surely, 2^6400088791 is an apocalyptic number.

6400088791 is a deficient number, since it is larger than the sum of its proper divisors (1).

6400088791 is an equidigital number, since it uses as much as digits as its factorization.

6400088791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 6400088791 is about 80000.5549418252. The cubic root of 6400088791 is about 1856.6441194744.

The spelling of 6400088791 in words is "six billion, four hundred million, eighty-eight thousand, seven hundred ninety-one".