4428397 has 4 divisors (see below), whose sum is σ = 4620960. Its totient is φ = 4235836.

The previous prime is 4428383. The next prime is 4428421. The reversal of 4428397 is 7938244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4428397 - 2¹¹ = 4426349 is a prime.

It is a super-2 number, since 2×4428397² = 39221399979218, which contains 22 as substring.

It is a Duffinian number.

4428397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4428317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96247 + ... + 96292.

It is an arithmetic number, because the mean of its divisors is an integer number (1155240).

Almost surely, 2^4428397 is an apocalyptic number.

It is an amenable number.

4428397 is a deficient number, since it is larger than the sum of its proper divisors (192563).

4428397 is a wasteful number, since it uses less digits than its factorization.

4428397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192562.

The product of its digits is 48384, while the sum is 37.

The square root of 4428397 is about 2104.3756793881. The cubic root of 4428397 is about 164.2160176410.

It can be divided in two parts, 44 and 28397, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 4428397 in words is "four million, four hundred twenty-eight thousand, three hundred ninety-seven".