3997694 has 8 divisors (see below), whose sum is σ = 6005568. Its totient is φ = 1995840.

The previous prime is 3997673. The next prime is 3997723. The reversal of 3997694 is 4967993.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974 + ... + 2990.

It is an arithmetic number, because the mean of its divisors is an integer number (750696).

Almost surely, 2^3997694 is an apocalyptic number.

3997694 is a deficient number, since it is larger than the sum of its proper divisors (2007874).

3997694 is a wasteful number, since it uses less digits than its factorization.

3997694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010.

The product of its digits is 367416, while the sum is 47.

The square root of 3997694 is about 1999.4234168880. The cubic root of 3997694 is about 158.7095947761.

Subtracting 3997694 from its reverse (4967993), we obtain a cube (970299 = 99³).

The spelling of 3997694 in words is "three million, nine hundred ninety-seven thousand, six hundred ninety-four".