863442913 has 2 divisors, whose sum is σ = 863442914. Its totient is φ = 863442912.

The previous prime is 863442893. The next prime is 863442917. The reversal of 863442913 is 319244368.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 793436224 + 70006689 = 28168^2 + 8367^2 .

It is a cyclic number.

It is not a de Polignac number, because 863442913 - 2⁹ = 863442401 is a prime.

It is not a weakly prime, because it can be changed into another prime (863442917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431721456 + 431721457.

It is an arithmetic number, because the mean of its divisors is an integer number (431721457).

Almost surely, 2^863442913 is an apocalyptic number.

It is an amenable number.

863442913 is a deficient number, since it is larger than the sum of its proper divisors (1).

863442913 is an equidigital number, since it uses as much as digits as its factorization.

863442913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 40.

The square root of 863442913 is about 29384.3991430827. The cubic root of 863442913 is about 952.2358833520.

The spelling of 863442913 in words is "eight hundred sixty-three million, four hundred forty-two thousand, nine hundred thirteen".