4720819 has 4 divisors (see below), whose sum is σ = 4926096. Its totient is φ = 4515544.

The previous prime is 4720817. The next prime is 4720843. The reversal of 4720819 is 9180274.

4720819 = 442² + 443² + ... + 464².

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

It is not a de Polignac number, because 4720819 - 2¹ = 4720817 is a prime.

It is a super-2 number, since 2×4720819² = 44572264061522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4720811) 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, 102604 + ... + 102649.

It is an arithmetic number, because the mean of its divisors is an integer number (1231524).

Almost surely, 2^4720819 is an apocalyptic number.

4720819 is a deficient number, since it is larger than the sum of its proper divisors (205277).

4720819 is a wasteful number, since it uses less digits than its factorization.

4720819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205276.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 4720819 is about 2172.7445777173. The cubic root of 4720819 is about 167.7538321194.

The spelling of 4720819 in words is "four million, seven hundred twenty thousand, eight hundred nineteen".