428097547 has 2 divisors, whose sum is σ = 428097548. Its totient is φ = 428097546.

The previous prime is 428097541. The next prime is 428097557. The reversal of 428097547 is 745790824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428097547 - 2³ = 428097539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 428097497 and 428097506.

It is not a weakly prime, because it can be changed into another prime (428097541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214048773 + 214048774.

It is an arithmetic number, because the mean of its divisors is an integer number (214048774).

Almost surely, 2^428097547 is an apocalyptic number.

428097547 is a deficient number, since it is larger than the sum of its proper divisors (1).

428097547 is an equidigital number, since it uses as much as digits as its factorization.

428097547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 428097547 is about 20690.5182873702. The cubic root of 428097547 is about 753.6694528015.

The spelling of 428097547 in words is "four hundred twenty-eight million, ninety-seven thousand, five hundred forty-seven".