3906493 has 2 divisors, whose sum is σ = 3906494. Its totient is φ = 3906492.

The previous prime is 3906479. The next prime is 3906541. The reversal of 3906493 is 3946093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1996569 + 1909924 = 1413^2 + 1382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3906493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3906433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1953246 + 1953247.

It is an arithmetic number, because the mean of its divisors is an integer number (1953247).

Almost surely, 2^3906493 is an apocalyptic number.

It is an amenable number.

3906493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3906493 is an equidigital number, since it uses as much as digits as its factorization.

3906493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 3906493 is about 1976.4850113269. The cubic root of 3906493 is about 157.4933968845.

The spelling of 3906493 in words is "three million, nine hundred six thousand, four hundred ninety-three".