864297953 has 4 divisors (see below), whose sum is σ = 864674580. Its totient is φ = 863921328.

The previous prime is 864297947. The next prime is 864297961. The reversal of 864297953 is 359792468.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 396527569 + 467770384 = 19913^2 + 21628^2 .

It is a cyclic number.

It is not a de Polignac number, because 864297953 - 2¹⁰ = 864296929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 864297895 and 864297904.

It is not an unprimeable number, because it can be changed into a prime (864297943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184850 + ... + 189467.

It is an arithmetic number, because the mean of its divisors is an integer number (216168645).

Almost surely, 2^864297953 is an apocalyptic number.

It is an amenable number.

864297953 is a deficient number, since it is larger than the sum of its proper divisors (376627).

864297953 is a wasteful number, since it uses less digits than its factorization.

864297953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376626.

The product of its digits is 3265920, while the sum is 53.

The square root of 864297953 is about 29398.9447599740. The cubic root of 864297953 is about 952.5501026040.

The spelling of 864297953 in words is "eight hundred sixty-four million, two hundred ninety-seven thousand, nine hundred fifty-three".