9439873 has 2 divisors, whose sum is σ = 9439874. Its totient is φ = 9439872.

The previous prime is 9439853. The next prime is 9439889. The reversal of 9439873 is 3789349.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7884864 + 1555009 = 2808^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 9439873 - 2¹⁷ = 9308801 is a prime.

It is a super-2 number, since 2×9439873² = 178222404512258, which contains 22 as substring.

9439873 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9439853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4719936 + 4719937.

It is an arithmetic number, because the mean of its divisors is an integer number (4719937).

Almost surely, 2^9439873 is an apocalyptic number.

It is an amenable number.

9439873 is a deficient number, since it is larger than the sum of its proper divisors (1).

9439873 is an equidigital number, since it uses as much as digits as its factorization.

9439873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 9439873 is about 3072.4376315883. The cubic root of 9439873 is about 211.3434132815.

It can be divided in two parts, 943 and 9873, that added together give a square (10816 = 104²).

The spelling of 9439873 in words is "nine million, four hundred thirty-nine thousand, eight hundred seventy-three".