3973157 has 4 divisors (see below), whose sum is σ = 4065600. Its totient is φ = 3880716.

The previous prime is 3973153. The next prime is 3973163. The reversal of 3973157 is 7513793.

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: 7513793 = 7 ⋅1073399.

It is a cyclic number.

It is not a de Polignac number, because 3973157 - 2² = 3973153 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 (3973153) 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, 46157 + ... + 46242.

It is an arithmetic number, because the mean of its divisors is an integer number (1016400).

Almost surely, 2^3973157 is an apocalyptic number.

It is an amenable number.

3973157 is a deficient number, since it is larger than the sum of its proper divisors (92443).

3973157 is an equidigital number, since it uses as much as digits as its factorization.

3973157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92442.

The product of its digits is 19845, while the sum is 35.

The square root of 3973157 is about 1993.2779535228. The cubic root of 3973157 is about 158.3842195321.

The spelling of 3973157 in words is "three million, nine hundred seventy-three thousand, one hundred fifty-seven".