749447287 has 2 divisors, whose sum is σ = 749447288. Its totient is φ = 749447286.

The previous prime is 749447263. The next prime is 749447291. The reversal of 749447287 is 782744947.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-749447287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (749445287) 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, 374723643 + 374723644.

It is an arithmetic number, because the mean of its divisors is an integer number (374723644).

Almost surely, 2^749447287 is an apocalyptic number.

749447287 is a deficient number, since it is larger than the sum of its proper divisors (1).

749447287 is an equidigital number, since it uses as much as digits as its factorization.

749447287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3161088, while the sum is 52.

The square root of 749447287 is about 27376.0349028124. The cubic root of 749447287 is about 908.3370535287.

The spelling of 749447287 in words is "seven hundred forty-nine million, four hundred forty-seven thousand, two hundred eighty-seven".