4390873 has 2 divisors, whose sum is σ = 4390874. Its totient is φ = 4390872.

The previous prime is 4390849. The next prime is 4390889. The reversal of 4390873 is 3780934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4338889 + 51984 = 2083^2 + 228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4390873 is a prime.

It is an Ulam number.

It is a nialpdrome in base 13.

It is not a weakly prime, because it can be changed into another prime (4390823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2195436 + 2195437.

It is an arithmetic number, because the mean of its divisors is an integer number (2195437).

Almost surely, 2^4390873 is an apocalyptic number.

It is an amenable number.

4390873 is a deficient number, since it is larger than the sum of its proper divisors (1).

4390873 is an equidigital number, since it uses as much as digits as its factorization.

4390873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 4390873 is about 2095.4410037030. The cubic root of 4390873 is about 163.7508734876.

The spelling of 4390873 in words is "four million, three hundred ninety thousand, eight hundred seventy-three".