3972307 has 4 divisors (see below), whose sum is σ = 4145040. Its totient is φ = 3799576.

The previous prime is 3972301. The next prime is 3972329. The reversal of 3972307 is 7032793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7032793 = 19 ⋅370147.

It is a cyclic number.

It is not a de Polignac number, because 3972307 - 2¹⁵ = 3939539 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3972301) 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 3 ways as a sum of consecutive naturals, for example, 86332 + ... + 86377.

It is an arithmetic number, because the mean of its divisors is an integer number (1036260).

Almost surely, 2^3972307 is an apocalyptic number.

3972307 is a deficient number, since it is larger than the sum of its proper divisors (172733).

3972307 is a wasteful number, since it uses less digits than its factorization.

3972307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172732.

The product of its (nonzero) digits is 7938, while the sum is 31.

The square root of 3972307 is about 1993.0647254919. The cubic root of 3972307 is about 158.3729240486.

It can be divided in two parts, 397 and 2307, that added together give a square (2704 = 52²).

The spelling of 3972307 in words is "three million, nine hundred seventy-two thousand, three hundred seven".