863349453 has 24 divisors (see below), whose sum is σ = 1282765848. Its totient is φ = 559135872.

The previous prime is 863349371. The next prime is 863349457. The reversal of 863349453 is 354943368.

863349453 is a `hidden beast` number, since 8 + 633 + 4 + 9 + 4 + 5 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 587723049 + 275626404 = 24243^2 + 16602^2 .

It is not a de Polignac number, because 863349453 - 2⁸ = 863349197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 863349399 and 863349408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863349457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263775 + ... + 267027.

It is an arithmetic number, because the mean of its divisors is an integer number (53448577).

Almost surely, 2^863349453 is an apocalyptic number.

It is an amenable number.

863349453 is a deficient number, since it is larger than the sum of its proper divisors (419416395).

863349453 is a wasteful number, since it uses less digits than its factorization.

863349453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093 (or 4090 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 863349453 is about 29382.8088003853. The cubic root of 863349453 is about 952.2015250964.

The spelling of 863349453 in words is "eight hundred sixty-three million, three hundred forty-nine thousand, four hundred fifty-three".