3973445 has 16 divisors (see below), whose sum is σ = 5505408. Its totient is φ = 2696640.

The previous prime is 3973439. The next prime is 3973447. The reversal of 3973445 is 5443793.

It is not a de Polignac number, because 3973445 - 2⁴ = 3973429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3973447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3215 + ... + 4275.

It is an arithmetic number, because the mean of its divisors is an integer number (344088).

Almost surely, 2^3973445 is an apocalyptic number.

3973445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3973445 is a deficient number, since it is larger than the sum of its proper divisors (1531963).

3973445 is a wasteful number, since it uses less digits than its factorization.

3973445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180.

The product of its digits is 45360, while the sum is 35.

The square root of 3973445 is about 1993.3501950234. The cubic root of 3973445 is about 158.3880463423.

The spelling of 3973445 in words is "three million, nine hundred seventy-three thousand, four hundred forty-five".