4397906 has 8 divisors (see below), whose sum is σ = 6757884. Its totient is φ = 2145280.

The previous prime is 4397893. The next prime is 4397909. The reversal of 4397906 is 6097934.

It can be written as a sum of positive squares in 2 ways, for example, as 3478225 + 919681 = 1865^2 + 959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4397906.

It is not an unprimeable number, because it can be changed into a prime (4397909) 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, 26735 + ... + 26898.

Almost surely, 2^4397906 is an apocalyptic number.

4397906 is a deficient number, since it is larger than the sum of its proper divisors (2359978).

4397906 is a wasteful number, since it uses less digits than its factorization.

4397906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53676.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 4397906 is about 2097.1184992747. The cubic root of 4397906 is about 163.8382551659.

The spelling of 4397906 in words is "four million, three hundred ninety-seven thousand, nine hundred six".