8400884391 has 6 divisors (see below), whose sum is σ = 12134610800. Its totient is φ = 5600589588.

The previous prime is 8400884369. The next prime is 8400884423. The reversal of 8400884391 is 1934880048.

It is not a de Polignac number, because 8400884391 - 2⁷ = 8400884263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8400884491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 466715791 + ... + 466715808.

Almost surely, 2^8400884391 is an apocalyptic number.

8400884391 is a deficient number, since it is larger than the sum of its proper divisors (3733726409).

8400884391 is a wasteful number, since it uses less digits than its factorization.

8400884391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933431605 (or 933431602 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 8400884391 is about 91656.3385205846. The cubic root of 8400884391 is about 2032.8640517444.

The spelling of 8400884391 in words is "eight billion, four hundred million, eight hundred eighty-four thousand, three hundred ninety-one".