764449447 has 2 divisors, whose sum is σ = 764449448. Its totient is φ = 764449446.

The previous prime is 764449397. The next prime is 764449463. The reversal of 764449447 is 744944467.

It is a strong prime.

It is an emirp because it is prime and its reverse (744944467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 764449447 - 2¹⁹ = 763925159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 764449447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (764449487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382224723 + 382224724.

It is an arithmetic number, because the mean of its divisors is an integer number (382224724).

Almost surely, 2^764449447 is an apocalyptic number.

764449447 is a deficient number, since it is larger than the sum of its proper divisors (1).

764449447 is an equidigital number, since it uses as much as digits as its factorization.

764449447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 49.

The square root of 764449447 is about 27648.6789376997. The cubic root of 764449447 is about 914.3579745727.

The spelling of 764449447 in words is "seven hundred sixty-four million, four hundred forty-nine thousand, four hundred forty-seven".