3908493 has 20 divisors (see below), whose sum is σ = 5927548. Its totient is φ = 2566080.

The previous prime is 3908491. The next prime is 3908497. The reversal of 3908493 is 3948093.

It can be written as a sum of positive squares in 2 ways, for example, as 2683044 + 1225449 = 1638^2 + 1107^2 .

It is not a de Polignac number, because 3908493 - 2¹ = 3908491 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 (3908491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5583 + ... + 6243.

Almost surely, 2^3908493 is an apocalyptic number.

It is an amenable number.

3908493 is a deficient number, since it is larger than the sum of its proper divisors (2019055).

3908493 is an equidigital number, since it uses as much as digits as its factorization.

3908493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 3908493 is about 1976.9908952749. The cubic root of 3908493 is about 157.5202695001.

Adding to 3908493 its sum of digits (36), we get a square (3908529 = 1977²).

The spelling of 3908493 in words is "three million, nine hundred eight thousand, four hundred ninety-three".