864283997 has 4 divisors (see below), whose sum is σ = 864342816. Its totient is φ = 864225180.

The previous prime is 864283993. The next prime is 864284023. The reversal of 864283997 is 799382468.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 864283997 - 2² = 864283993 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 (864283993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13538 + ... + 43724.

It is an arithmetic number, because the mean of its divisors is an integer number (216085704).

Almost surely, 2^864283997 is an apocalyptic number.

It is an amenable number.

864283997 is a deficient number, since it is larger than the sum of its proper divisors (58819).

864283997 is a wasteful number, since it uses less digits than its factorization.

864283997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58818.

The product of its digits is 5225472, while the sum is 56.

The square root of 864283997 is about 29398.7074035577. The cubic root of 864283997 is about 952.5449755677.

The spelling of 864283997 in words is "eight hundred sixty-four million, two hundred eighty-three thousand, nine hundred ninety-seven".