3972966 has 16 divisors (see below), whose sum is σ = 8065344. Its totient is φ = 1304424.

The previous prime is 3972959. The next prime is 3972973. The reversal of 3972966 is 6692793.

It is an interprime number because it is at equal distance from previous prime (3972959) and next prime (3972973).

It is a super-3 number, since 3×3972966³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4540 + ... + 5343.

It is an arithmetic number, because the mean of its divisors is an integer number (504084).

Almost surely, 2^3972966 is an apocalyptic number.

3972966 is an abundant number, since it is smaller than the sum of its proper divisors (4092378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3972966 is a wasteful number, since it uses less digits than its factorization.

3972966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9955.

The product of its digits is 122472, while the sum is 42.

The square root of 3972966 is about 1993.2300419169. The cubic root of 3972966 is about 158.3816815108.

The spelling of 3972966 in words is "three million, nine hundred seventy-two thousand, nine hundred sixty-six".