4397823 has 12 divisors (see below), whose sum is σ = 6412120. Its totient is φ = 2904336.

The previous prime is 4397803. The next prime is 4397831. The reversal of 4397823 is 3287934.

It is not a de Polignac number, because 4397823 - 2⁹ = 4397311 is a prime.

It is a Duffinian number.

4397823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4397803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1261 + ... + 3222.

Almost surely, 2^4397823 is an apocalyptic number.

4397823 is a deficient number, since it is larger than the sum of its proper divisors (2014297).

4397823 is a wasteful number, since it uses less digits than its factorization.

4397823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4598 (or 4595 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 4397823 is about 2097.0987101231. The cubic root of 4397823 is about 163.8372244738.

The spelling of 4397823 in words is "four million, three hundred ninety-seven thousand, eight hundred twenty-three".