4457389 has 2 divisors, whose sum is σ = 4457390. Its totient is φ = 4457388.

The previous prime is 4457371. The next prime is 4457399. The reversal of 4457389 is 9837544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4272489 + 184900 = 2067^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 4457389 - 2⁵ = 4457357 is a prime.

4457389 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4457359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2228694 + 2228695.

It is an arithmetic number, because the mean of its divisors is an integer number (2228695).

Almost surely, 2^4457389 is an apocalyptic number.

It is an amenable number.

4457389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4457389 is an equidigital number, since it uses as much as digits as its factorization.

4457389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 4457389 is about 2111.2529455278. The cubic root of 4457389 is about 164.5736036692.

The spelling of 4457389 in words is "four million, four hundred fifty-seven thousand, three hundred eighty-nine".