4539091 has 2 divisors, whose sum is σ = 4539092. Its totient is φ = 4539090.

The previous prime is 4539083. The next prime is 4539121. The reversal of 4539091 is 1909354.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4539091 - 2³ = 4539083 is a prime.

4539091 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4539011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2269545 + 2269546.

It is an arithmetic number, because the mean of its divisors is an integer number (2269546).

Almost surely, 2^4539091 is an apocalyptic number.

4539091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4539091 is an equidigital number, since it uses as much as digits as its factorization.

4539091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 4539091 is about 2130.5142571689. The cubic root of 4539091 is about 165.5730427270.

The spelling of 4539091 in words is "four million, five hundred thirty-nine thousand, ninety-one".