3973913 has 4 divisors (see below), whose sum is σ = 3980160. Its totient is φ = 3967668.

The previous prime is 3973877. The next prime is 3973919. The reversal of 3973913 is 3193793.

It is a happy number.

3973913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3193793 = 71 ⋅44983.

It is a cyclic number.

It is not a de Polignac number, because 3973913 - 2¹⁸ = 3711769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3973919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2045 + ... + 3482.

It is an arithmetic number, because the mean of its divisors is an integer number (995040).

Almost surely, 2^3973913 is an apocalyptic number.

It is an amenable number.

3973913 is a deficient number, since it is larger than the sum of its proper divisors (6247).

3973913 is an equidigital number, since it uses as much as digits as its factorization.

3973913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6246.

The product of its digits is 15309, while the sum is 35.

The square root of 3973913 is about 1993.4675818784. The cubic root of 3973913 is about 158.3942645145.

The spelling of 3973913 in words is "three million, nine hundred seventy-three thousand, nine hundred thirteen".