459220819 has 4 divisors (see below), whose sum is σ = 459371080. Its totient is φ = 459070560.

The previous prime is 459220807. The next prime is 459220837. The reversal of 459220819 is 918022954.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918022954 = 2 ⋅459011477.

It is a cyclic number.

It is not a de Polignac number, because 459220819 - 2²³ = 450832211 is a prime.

It is a super-2 number, since 2×459220819² = 421767521206061522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (459220859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70449 + ... + 76690.

It is an arithmetic number, because the mean of its divisors is an integer number (114842770).

Almost surely, 2^459220819 is an apocalyptic number.

459220819 is a deficient number, since it is larger than the sum of its proper divisors (150261).

459220819 is a wasteful number, since it uses less digits than its factorization.

459220819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150260.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 459220819 is about 21429.4381400913. The cubic root of 459220819 is about 771.5081584180.

The spelling of 459220819 in words is "four hundred fifty-nine million, two hundred twenty thousand, eight hundred nineteen".