744902491 has 2 divisors, whose sum is σ = 744902492. Its totient is φ = 744902490.

The previous prime is 744902461. The next prime is 744902531. The reversal of 744902491 is 194209447.

It is an a-pointer prime, because the next prime (744902531) can be obtained adding 744902491 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 744902491 - 2⁷ = 744902363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (744902401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372451245 + 372451246.

It is an arithmetic number, because the mean of its divisors is an integer number (372451246).

Almost surely, 2^744902491 is an apocalyptic number.

744902491 is a deficient number, since it is larger than the sum of its proper divisors (1).

744902491 is an equidigital number, since it uses as much as digits as its factorization.

744902491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 744902491 is about 27292.9018427869. The cubic root of 744902491 is about 906.4972178437.

The spelling of 744902491 in words is "seven hundred forty-four million, nine hundred two thousand, four hundred ninety-one".