3994973 has 4 divisors (see below), whose sum is σ = 4012800. Its totient is φ = 3977148.

The previous prime is 3994961. The next prime is 3994993. The reversal of 3994973 is 3794993.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3794993 = 61 ⋅62213.

It is a cyclic number.

It is not a de Polignac number, because 3994973 - 2⁶ = 3994909 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 (3994933) 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, 8573 + ... + 9026.

It is an arithmetic number, because the mean of its divisors is an integer number (1003200).

Almost surely, 2^3994973 is an apocalyptic number.

It is an amenable number.

3994973 is a deficient number, since it is larger than the sum of its proper divisors (17827).

3994973 is a wasteful number, since it uses less digits than its factorization.

3994973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17826.

The product of its digits is 183708, while the sum is 44.

The square root of 3994973 is about 1998.7428548965. The cubic root of 3994973 is about 158.6735784441.

The spelling of 3994973 in words is "three million, nine hundred ninety-four thousand, nine hundred seventy-three".