440247427 has 2 divisors, whose sum is σ = 440247428. Its totient is φ = 440247426.

The previous prime is 440247397. The next prime is 440247481. The reversal of 440247427 is 724742044.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440247427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440247392 and 440247401.

It is not a weakly prime, because it can be changed into another prime (440247527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220123713 + 220123714.

It is an arithmetic number, because the mean of its divisors is an integer number (220123714).

Almost surely, 2^440247427 is an apocalyptic number.

440247427 is a deficient number, since it is larger than the sum of its proper divisors (1).

440247427 is an equidigital number, since it uses as much as digits as its factorization.

440247427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50176, while the sum is 34.

The square root of 440247427 is about 20982.0739442029. The cubic root of 440247427 is about 760.7330340912.

The spelling of 440247427 in words is "four hundred forty million, two hundred forty-seven thousand, four hundred twenty-seven".