4891547 has 2 divisors, whose sum is σ = 4891548. Its totient is φ = 4891546.

The previous prime is 4891519. The next prime is 4891559. The reversal of 4891547 is 7451984.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4891547 - 2⁶ = 4891483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4891547.

It is not a weakly prime, because it can be changed into another prime (4891507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2445773 + 2445774.

It is an arithmetic number, because the mean of its divisors is an integer number (2445774).

Almost surely, 2^4891547 is an apocalyptic number.

4891547 is a deficient number, since it is larger than the sum of its proper divisors (1).

4891547 is an equidigital number, since it uses as much as digits as its factorization.

4891547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 4891547 is about 2211.6841998803. The cubic root of 4891547 is about 169.7521995228.

The spelling of 4891547 in words is "four million, eight hundred ninety-one thousand, five hundred forty-seven".