4393973 has 4 divisors (see below), whose sum is σ = 4652460. Its totient is φ = 4135488.

The previous prime is 4393969. The next prime is 4393979. The reversal of 4393973 is 3793934.

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 2696164 + 1697809 = 1642^2 + 1303^2 .

It is not a de Polignac number, because 4393973 - 2² = 4393969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4393979) 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, 129218 + ... + 129251.

It is an arithmetic number, because the mean of its divisors is an integer number (1163115).

Almost surely, 2^4393973 is an apocalyptic number.

It is an amenable number.

4393973 is a deficient number, since it is larger than the sum of its proper divisors (258487).

4393973 is a wasteful number, since it uses less digits than its factorization.

4393973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258486.

The product of its digits is 61236, while the sum is 38.

The square root of 4393973 is about 2096.1805742827. The cubic root of 4393973 is about 163.7894010037.

The spelling of 4393973 in words is "four million, three hundred ninety-three thousand, nine hundred seventy-three".