863457457 has 2 divisors, whose sum is σ = 863457458. Its totient is φ = 863457456.

The previous prime is 863457449. The next prime is 863457461. The reversal of 863457457 is 754754368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 823058721 + 40398736 = 28689^2 + 6356^2 .

It is a cyclic number.

It is not a de Polignac number, because 863457457 - 2³ = 863457449 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 863457457.

It is not a weakly prime, because it can be changed into another prime (863457437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431728728 + 431728729.

It is an arithmetic number, because the mean of its divisors is an integer number (431728729).

Almost surely, 2^863457457 is an apocalyptic number.

It is an amenable number.

863457457 is a deficient number, since it is larger than the sum of its proper divisors (1).

863457457 is an equidigital number, since it uses as much as digits as its factorization.

863457457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2822400, while the sum is 49.

The square root of 863457457 is about 29384.6466203016. The cubic root of 863457457 is about 952.2412298706.

It can be divided in two parts, 86 and 3457457, that added together give a palindrome (3457543).

The spelling of 863457457 in words is "eight hundred sixty-three million, four hundred fifty-seven thousand, four hundred fifty-seven".