868406953 has 4 divisors (see below), whose sum is σ = 877359700. Its totient is φ = 859454208.

The previous prime is 868406941. The next prime is 868406977. The reversal of 868406953 is 359604868.

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 436099689 + 432307264 = 20883^2 + 20792^2 .

It is a cyclic number.

It is not a de Polignac number, because 868406953 - 2¹³ = 868398761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 868406897 and 868406906.

It is not an unprimeable number, because it can be changed into a prime (868406993) 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, 4476228 + ... + 4476421.

It is an arithmetic number, because the mean of its divisors is an integer number (219339925).

Almost surely, 2^868406953 is an apocalyptic number.

It is an amenable number.

868406953 is a deficient number, since it is larger than the sum of its proper divisors (8952747).

868406953 is an equidigital number, since it uses as much as digits as its factorization.

868406953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8952746.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 868406953 is about 29468.7453584302. The cubic root of 868406953 is about 954.0572379870.

The spelling of 868406953 in words is "eight hundred sixty-eight million, four hundred six thousand, nine hundred fifty-three".