744744947 has 2 divisors, whose sum is σ = 744744948. Its totient is φ = 744744946.

The previous prime is 744744943. The next prime is 744744983. The reversal of 744744947 is 749447447.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 744744947 - 2² = 744744943 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 744744895 and 744744904.

It is not a weakly prime, because it can be changed into another prime (744744941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372372473 + 372372474.

It is an arithmetic number, because the mean of its divisors is an integer number (372372474).

Almost surely, 2^744744947 is an apocalyptic number.

744744947 is a deficient number, since it is larger than the sum of its proper divisors (1).

744744947 is an equidigital number, since it uses as much as digits as its factorization.

744744947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3161088, while the sum is 50.

The square root of 744744947 is about 27290.0155185005. The cubic root of 744744947 is about 906.4333064510.

The spelling of 744744947 in words is "seven hundred forty-four million, seven hundred forty-four thousand, nine hundred forty-seven".