868405451 has 2 divisors, whose sum is σ = 868405452. Its totient is φ = 868405450.

The previous prime is 868405427. The next prime is 868405453. The reversal of 868405451 is 154504868.

868405451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868405451 is a prime.

Together with 868405453, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 868405399 and 868405408.

It is not a weakly prime, because it can be changed into another prime (868405453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434202725 + 434202726.

It is an arithmetic number, because the mean of its divisors is an integer number (434202726).

Almost surely, 2^868405451 is an apocalyptic number.

868405451 is a deficient number, since it is larger than the sum of its proper divisors (1).

868405451 is an equidigital number, since it uses as much as digits as its factorization.

868405451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 868405451 is about 29468.7198737916. The cubic root of 868405451 is about 954.0566879397.

The spelling of 868405451 in words is "eight hundred sixty-eight million, four hundred five thousand, four hundred fifty-one".