3972997 has 8 divisors (see below), whose sum is σ = 4738176. Its totient is φ = 3257232.

The previous prime is 3972979. The next prime is 3973007. The reversal of 3972997 is 7992793.

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

It is a cyclic number.

It is not a de Polignac number, because 3972997 - 2¹¹ = 3970949 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 (3972937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12178 + ... + 12499.

It is an arithmetic number, because the mean of its divisors is an integer number (592272).

Almost surely, 2^3972997 is an apocalyptic number.

It is an amenable number.

3972997 is a deficient number, since it is larger than the sum of its proper divisors (765179).

3972997 is a wasteful number, since it uses less digits than its factorization.

3972997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24707.

The product of its digits is 214326, while the sum is 46.

The square root of 3972997 is about 1993.2378182244. The cubic root of 3972997 is about 158.3820934465.

The spelling of 3972997 in words is "three million, nine hundred seventy-two thousand, nine hundred ninety-seven".