3904493 has 2 divisors, whose sum is σ = 3904494. Its totient is φ = 3904492.

The previous prime is 3904487. The next prime is 3904501. The reversal of 3904493 is 3944093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2829124 + 1075369 = 1682^2 + 1037^2 .

It is a cyclic number.

It is not a de Polignac number, because 3904493 - 2⁴ = 3904477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3906493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952246 + 1952247.

It is an arithmetic number, because the mean of its divisors is an integer number (1952247).

Almost surely, 2^3904493 is an apocalyptic number.

It is an amenable number.

3904493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3904493 is an equidigital number, since it uses as much as digits as its factorization.

3904493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 3904493 is about 1975.9789978641. The cubic root of 3904493 is about 157.4665150954.

The spelling of 3904493 in words is "three million, nine hundred four thousand, four hundred ninety-three".