8399254991 has 8 divisors (see below), whose sum is σ = 9082549440. Its totient is φ = 7736985088.

The previous prime is 8399254943. The next prime is 8399254999. The reversal of 8399254991 is 1994529938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8399254991 - 2²⁶ = 8332146127 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 8399254991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8399254999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5255306 + ... + 5256903.

It is an arithmetic number, because the mean of its divisors is an integer number (1135318680).

Almost surely, 2^8399254991 is an apocalyptic number.

8399254991 is a deficient number, since it is larger than the sum of its proper divisors (683294449).

8399254991 is a wasteful number, since it uses less digits than its factorization.

8399254991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10512273.

The product of its digits is 6298560, while the sum is 59.

The square root of 8399254991 is about 91647.4494516896. The cubic root of 8399254991 is about 2032.7326146757.

The spelling of 8399254991 in words is "eight billion, three hundred ninety-nine million, two hundred fifty-four thousand, nine hundred ninety-one".