864951629 has 2 divisors, whose sum is σ = 864951630. Its totient is φ = 864951628.

The previous prime is 864951599. The next prime is 864951631. The reversal of 864951629 is 926159468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 605258404 + 259693225 = 24602^2 + 16115^2 .

It is a cyclic number.

It is not a de Polignac number, because 864951629 - 2²⁴ = 848174413 is a prime.

Together with 864951631, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864951029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432475814 + 432475815.

It is an arithmetic number, because the mean of its divisors is an integer number (432475815).

Almost surely, 2^864951629 is an apocalyptic number.

It is an amenable number.

864951629 is a deficient number, since it is larger than the sum of its proper divisors (1).

864951629 is an equidigital number, since it uses as much as digits as its factorization.

864951629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 50.

The square root of 864951629 is about 29410.0599965386. The cubic root of 864951629 is about 952.7901827100.

The spelling of 864951629 in words is "eight hundred sixty-four million, nine hundred fifty-one thousand, six hundred twenty-nine".