3912445 has 4 divisors (see below), whose sum is σ = 4694940. Its totient is φ = 3129952.

The previous prime is 3912443. The next prime is 3912451. The reversal of 3912445 is 5442193.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1898884 + 2013561 = 1378^2 + 1419^2 .

It is a cyclic number.

It is not a de Polignac number, because 3912445 - 2¹ = 3912443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912443) 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, 391240 + ... + 391249.

It is an arithmetic number, because the mean of its divisors is an integer number (1173735).

Almost surely, 2^3912445 is an apocalyptic number.

It is an amenable number.

3912445 is a deficient number, since it is larger than the sum of its proper divisors (782495).

3912445 is an equidigital number, since it uses as much as digits as its factorization.

3912445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782494.

The product of its digits is 4320, while the sum is 28.

The square root of 3912445 is about 1977.9901415326. The cubic root of 3912445 is about 157.5733428463.

The spelling of 3912445 in words is "three million, nine hundred twelve thousand, four hundred forty-five".