4220039 has 2 divisors, whose sum is σ = 4220040. Its totient is φ = 4220038.

The previous prime is 4219991. The next prime is 4220053. The reversal of 4220039 is 9300224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4220039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4220039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4220059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110019 + 2110020.

It is an arithmetic number, because the mean of its divisors is an integer number (2110020).

Almost surely, 2^4220039 is an apocalyptic number.

4220039 is a deficient number, since it is larger than the sum of its proper divisors (1).

4220039 is an equidigital number, since it uses as much as digits as its factorization.

4220039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 4220039 is about 2054.2733508470. The cubic root of 4220039 is about 161.5990567659.

The spelling of 4220039 in words is "four million, two hundred twenty thousand, thirty-nine".