3973693 has 4 divisors (see below), whose sum is σ = 3980988. Its totient is φ = 3966400.

The previous prime is 3973691. The next prime is 3973727. The reversal of 3973693 is 3963793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3963793 = 89 ⋅44537.

It can be written as a sum of positive squares in 2 ways, for example, as 2022084 + 1951609 = 1422^2 + 1397^2 .

It is a cyclic number.

It is not a de Polignac number, because 3973693 - 2¹ = 3973691 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 (3973691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2758 + ... + 3943.

It is an arithmetic number, because the mean of its divisors is an integer number (995247).

Almost surely, 2^3973693 is an apocalyptic number.

It is an amenable number.

3973693 is a deficient number, since it is larger than the sum of its proper divisors (7295).

3973693 is an equidigital number, since it uses as much as digits as its factorization.

3973693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7294.

The product of its digits is 91854, while the sum is 40.

The square root of 3973693 is about 1993.4124008845. The cubic root of 3973693 is about 158.3913415029.

The spelling of 3973693 in words is "three million, nine hundred seventy-three thousand, six hundred ninety-three".