4373389 has 2 divisors, whose sum is σ = 4373390. Its totient is φ = 4373388.

The previous prime is 4373351. The next prime is 4373399. The reversal of 4373389 is 9833734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2427364 + 1946025 = 1558^2 + 1395^2 .

It is a cyclic number.

It is not a de Polignac number, because 4373389 - 2⁷ = 4373261 is a prime.

4373389 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4373309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2186694 + 2186695.

It is an arithmetic number, because the mean of its divisors is an integer number (2186695).

Almost surely, 2^4373389 is an apocalyptic number.

It is an amenable number.

4373389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4373389 is an equidigital number, since it uses as much as digits as its factorization.

4373389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 37.

The square root of 4373389 is about 2091.2649282193. The cubic root of 4373389 is about 163.5332380436.

The spelling of 4373389 in words is "four million, three hundred seventy-three thousand, three hundred eighty-nine".