3689993 has 2 divisors, whose sum is σ = 3689994. Its totient is φ = 3689992.

The previous prime is 3689963. The next prime is 3690013. The reversal of 3689993 is 3999863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3485689 + 204304 = 1867^2 + 452^2 .

It is a cyclic number.

It is not a de Polignac number, because 3689993 - 2¹⁴ = 3673609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3689963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844996 + 1844997.

It is an arithmetic number, because the mean of its divisors is an integer number (1844997).

Almost surely, 2^3689993 is an apocalyptic number.

It is an amenable number.

3689993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3689993 is an equidigital number, since it uses as much as digits as its factorization.

3689993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 47.

The square root of 3689993 is about 1920.9354492018. The cubic root of 3689993 is about 154.5284733675.

The spelling of 3689993 in words is "three million, six hundred eighty-nine thousand, nine hundred ninety-three".