945042247 has 2 divisors, whose sum is σ = 945042248. Its totient is φ = 945042246.

The previous prime is 945042221. The next prime is 945042269. The reversal of 945042247 is 742240549.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 945042247 - 2²⁷ = 810824519 is a prime.

It is a super-2 number, since 2×945042247² = 1786209697229618018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (945042047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472521123 + 472521124.

It is an arithmetic number, because the mean of its divisors is an integer number (472521124).

Almost surely, 2^945042247 is an apocalyptic number.

945042247 is a deficient number, since it is larger than the sum of its proper divisors (1).

945042247 is an equidigital number, since it uses as much as digits as its factorization.

945042247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 945042247 is about 30741.5394377055. The cubic root of 945042247 is about 981.3345164089.

The spelling of 945042247 in words is "nine hundred forty-five million, forty-two thousand, two hundred forty-seven".