4539819 has 4 divisors (see below), whose sum is σ = 6053096. Its totient is φ = 3026544.

The previous prime is 4539817. The next prime is 4539823. The reversal of 4539819 is 9189354.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4539819 - 2¹ = 4539817 is a prime.

It is a super-2 number, since 2×4539819² = 41219913105522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4539817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756634 + ... + 756639.

It is an arithmetic number, because the mean of its divisors is an integer number (1513274).

Almost surely, 2^4539819 is an apocalyptic number.

4539819 is a deficient number, since it is larger than the sum of its proper divisors (1513277).

4539819 is a wasteful number, since it uses less digits than its factorization.

4539819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513276.

The product of its digits is 38880, while the sum is 39.

The square root of 4539819 is about 2130.6851010884. The cubic root of 4539819 is about 165.5818940390.

The spelling of 4539819 in words is "four million, five hundred thirty-nine thousand, eight hundred nineteen".