428413247 has 2 divisors, whose sum is σ = 428413248. Its totient is φ = 428413246.

The previous prime is 428413217. The next prime is 428413261. The reversal of 428413247 is 742314824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428413247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428413217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214206623 + 214206624.

It is an arithmetic number, because the mean of its divisors is an integer number (214206624).

Almost surely, 2^428413247 is an apocalyptic number.

428413247 is a deficient number, since it is larger than the sum of its proper divisors (1).

428413247 is an equidigital number, since it uses as much as digits as its factorization.

428413247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 35.

The square root of 428413247 is about 20698.1459797732. The cubic root of 428413247 is about 753.8546714773.

The spelling of 428413247 in words is "four hundred twenty-eight million, four hundred thirteen thousand, two hundred forty-seven".