744664493 has 2 divisors, whose sum is σ = 744664494. Its totient is φ = 744664492.

The previous prime is 744664483. The next prime is 744664499. The reversal of 744664493 is 394466447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 692637124 + 52027369 = 26318^2 + 7213^2 .

It is an emirp because it is prime and its reverse (394466447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 744664493 - 2²² = 740470189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744664499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372332246 + 372332247.

It is an arithmetic number, because the mean of its divisors is an integer number (372332247).

Almost surely, 2^744664493 is an apocalyptic number.

It is an amenable number.

744664493 is a deficient number, since it is larger than the sum of its proper divisors (1).

744664493 is an equidigital number, since it uses as much as digits as its factorization.

744664493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 47.

The square root of 744664493 is about 27288.5414230955. The cubic root of 744664493 is about 906.4006649354.

The spelling of 744664493 in words is "seven hundred forty-four million, six hundred sixty-four thousand, four hundred ninety-three".