3994797 has 4 divisors (see below), whose sum is σ = 5326400. Its totient is φ = 2663196.

The previous prime is 3994789. The next prime is 3994799. The reversal of 3994797 is 7974993.

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 not a de Polignac number, because 3994797 - 2³ = 3994789 is a prime.

It is a D-number.

It is a Duffinian number.

3994797 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994799) 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, 665797 + ... + 665802.

It is an arithmetic number, because the mean of its divisors is an integer number (1331600).

Almost surely, 2^3994797 is an apocalyptic number.

It is an amenable number.

3994797 is a deficient number, since it is larger than the sum of its proper divisors (1331603).

3994797 is a wasteful number, since it uses less digits than its factorization.

3994797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331602.

The product of its digits is 428652, while the sum is 48.

The square root of 3994797 is about 1998.6988267370. The cubic root of 3994797 is about 158.6712482690.

The spelling of 3994797 in words is "three million, nine hundred ninety-four thousand, seven hundred ninety-seven".