3973537 has 4 divisors (see below), whose sum is σ = 3982000. Its totient is φ = 3965076.

The previous prime is 3973531. The next prime is 3973553. The reversal of 3973537 is 7353793.

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: 7353793 = 593 ⋅12401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3973537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3973496 and 3973505.

It is not an unprimeable number, because it can be changed into a prime (3973531) 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, 3483 + ... + 4480.

It is an arithmetic number, because the mean of its divisors is an integer number (995500).

Almost surely, 2^3973537 is an apocalyptic number.

It is an amenable number.

3973537 is a deficient number, since it is larger than the sum of its proper divisors (8463).

3973537 is an equidigital number, since it uses as much as digits as its factorization.

3973537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8462.

The product of its digits is 59535, while the sum is 37.

The square root of 3973537 is about 1993.3732716177. The cubic root of 3973537 is about 158.3892687566.

The spelling of 3973537 in words is "three million, nine hundred seventy-three thousand, five hundred thirty-seven".