3985013 has 2 divisors, whose sum is σ = 3985014. Its totient is φ = 3985012.

The previous prime is 3984983. The next prime is 3985027. The reversal of 3985013 is 3105893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3775249 + 209764 = 1943^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 3985013 - 2⁶ = 3984949 is a prime.

It is a super-2 number, since 2×3985013² = 31760657220338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3985063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992506 + 1992507.

It is an arithmetic number, because the mean of its divisors is an integer number (1992507).

Almost surely, 2^3985013 is an apocalyptic number.

It is an amenable number.

3985013 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985013 is an equidigital number, since it uses as much as digits as its factorization.

3985013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 3985013 is about 1996.2497338760. The cubic root of 3985013 is about 158.5416039154.

The spelling of 3985013 in words is "three million, nine hundred eighty-five thousand, thirteen".