3972623 has 4 divisors (see below), whose sum is σ = 4109640. Its totient is φ = 3835608.

The previous prime is 3972601. The next prime is 3972643. The reversal of 3972623 is 3262793.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3262793 = 17 ⋅191929.

It is a cyclic number.

It is not a de Polignac number, because 3972623 - 2¹⁰ = 3971599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3972623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972643) 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, 68465 + ... + 68522.

It is an arithmetic number, because the mean of its divisors is an integer number (1027410).

Almost surely, 2^3972623 is an apocalyptic number.

3972623 is a deficient number, since it is larger than the sum of its proper divisors (137017).

3972623 is a wasteful number, since it uses less digits than its factorization.

3972623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137016.

The product of its digits is 13608, while the sum is 32.

The square root of 3972623 is about 1993.1439988119. The cubic root of 3972623 is about 158.3771234988.

The spelling of 3972623 in words is "three million, nine hundred seventy-two thousand, six hundred twenty-three".