4245389 has 4 divisors (see below), whose sum is σ = 4293180. Its totient is φ = 4197600.

The previous prime is 4245361. The next prime is 4245407. The reversal of 4245389 is 9835424.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1304164 + 2941225 = 1142^2 + 1715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4245389 is a prime.

It is a super-2 number, since 2×4245389² = 36046655522642, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4⁵ + 2²² + 4⁶ + 5⁶ + 3⁹ + 8⁴ + 9⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4245289) 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, 23762 + ... + 23939.

It is an arithmetic number, because the mean of its divisors is an integer number (1073295).

Almost surely, 2^4245389 is an apocalyptic number.

It is an amenable number.

4245389 is a deficient number, since it is larger than the sum of its proper divisors (47791).

4245389 is an equidigital number, since it uses as much as digits as its factorization.

4245389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47790.

The product of its digits is 34560, while the sum is 35.

The square root of 4245389 is about 2060.4341775461. The cubic root of 4245389 is about 161.9219890619.

Adding to 4245389 its sum of digits (35), we get a palindrome (4245424).

The spelling of 4245389 in words is "four million, two hundred forty-five thousand, three hundred eighty-nine".