3870913 has 2 divisors, whose sum is σ = 3870914. Its totient is φ = 3870912.

The previous prime is 3870899. The next prime is 3870929. The reversal of 3870913 is 3190783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3055504 + 815409 = 1748^2 + 903^2 .

It is a cyclic number.

It is not a de Polignac number, because 3870913 - 2⁹ = 3870401 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3870953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935456 + 1935457.

It is an arithmetic number, because the mean of its divisors is an integer number (1935457).

Almost surely, 2^3870913 is an apocalyptic number.

It is an amenable number.

3870913 is a deficient number, since it is larger than the sum of its proper divisors (1).

3870913 is an equidigital number, since it uses as much as digits as its factorization.

3870913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 3870913 is about 1967.4635955971. The cubic root of 3870913 is about 157.0137924513.

The spelling of 3870913 in words is "three million, eight hundred seventy thousand, nine hundred thirteen".