744837491 has 4 divisors (see below), whose sum is σ = 764968272. Its totient is φ = 724706712.

The previous prime is 744837481. The next prime is 744837503. The reversal of 744837491 is 194738447.

It is a happy number.

744837491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194738447 = 23 ⋅8466889.

It is a cyclic number.

It is not a de Polignac number, because 744837491 - 2¹⁴ = 744821107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744837481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10065335 + ... + 10065408.

It is an arithmetic number, because the mean of its divisors is an integer number (191242068).

Almost surely, 2^744837491 is an apocalyptic number.

744837491 is a deficient number, since it is larger than the sum of its proper divisors (20130781).

744837491 is a wasteful number, since it uses less digits than its factorization.

744837491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20130780.

The product of its digits is 677376, while the sum is 47.

The square root of 744837491 is about 27291.7110310072. The cubic root of 744837491 is about 906.4708501720.

The spelling of 744837491 in words is "seven hundred forty-four million, eight hundred thirty-seven thousand, four hundred ninety-one".