747997241 has 2 divisors, whose sum is σ = 747997242. Its totient is φ = 747997240.

The previous prime is 747997231. The next prime is 747997249. The reversal of 747997241 is 142799747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 736579600 + 11417641 = 27140^2 + 3379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-747997241 is a prime.

It is a super-2 number, since 2×747997241² = 1118999745087224162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 747997241.

It is not a weakly prime, because it can be changed into another prime (747997249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373998620 + 373998621.

It is an arithmetic number, because the mean of its divisors is an integer number (373998621).

Almost surely, 2^747997241 is an apocalyptic number.

It is an amenable number.

747997241 is a deficient number, since it is larger than the sum of its proper divisors (1).

747997241 is an equidigital number, since it uses as much as digits as its factorization.

747997241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 50.

The square root of 747997241 is about 27349.5382227927. The cubic root of 747997241 is about 907.7508522403.

The spelling of 747997241 in words is "seven hundred forty-seven million, nine hundred ninety-seven thousand, two hundred forty-one".