3912506 has 16 divisors (see below), whose sum is σ = 6539400. Its totient is φ = 1743168.

The previous prime is 3912497. The next prime is 3912509. The reversal of 3912506 is 6052193.

It can be written as a sum of positive squares in 4 ways, for example, as 3258025 + 654481 = 1805^2 + 809^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (3912509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841 + ... + 3348.

Almost surely, 2^3912506 is an apocalyptic number.

3912506 is a deficient number, since it is larger than the sum of its proper divisors (2626894).

3912506 is a wasteful number, since it uses less digits than its factorization.

3912506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 3912506 is about 1978.0055611651. The cubic root of 3912506 is about 157.5741617651.

Adding to 3912506 its reverse (6052193), we get a palindrome (9964699).

The spelling of 3912506 in words is "three million, nine hundred twelve thousand, five hundred six".