543974609 has 2 divisors, whose sum is σ = 543974610. Its totient is φ = 543974608.

The previous prime is 543974597. The next prime is 543974623. The reversal of 543974609 is 906479345.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 491730625 + 52243984 = 22175^2 + 7228^2 .

It is a cyclic number.

It is not a de Polignac number, because 543974609 - 2²⁸ = 275539153 is a prime.

It is not a weakly prime, because it can be changed into another prime (543974689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271987304 + 271987305.

It is an arithmetic number, because the mean of its divisors is an integer number (271987305).

Almost surely, 2^543974609 is an apocalyptic number.

It is an amenable number.

543974609 is a deficient number, since it is larger than the sum of its proper divisors (1).

543974609 is an equidigital number, since it uses as much as digits as its factorization.

543974609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 543974609 is about 23323.2632579577. The cubic root of 543974609 is about 816.3183195358.

The spelling of 543974609 in words is "five hundred forty-three million, nine hundred seventy-four thousand, six hundred nine".