3928013 has 2 divisors, whose sum is σ = 3928014. Its totient is φ = 3928012.

The previous prime is 3927997. The next prime is 3928019. The reversal of 3928013 is 3108293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3833764 + 94249 = 1958^2 + 307^2 .

It is an emirp because it is prime and its reverse (3108293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3928013 - 2⁴ = 3927997 is a prime.

It is a super-2 number, since 2×3928013² = 30858572256338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3928019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1964006 + 1964007.

It is an arithmetic number, because the mean of its divisors is an integer number (1964007).

Almost surely, 2^3928013 is an apocalyptic number.

It is an amenable number.

3928013 is a deficient number, since it is larger than the sum of its proper divisors (1).

3928013 is an equidigital number, since it uses as much as digits as its factorization.

3928013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 3928013 is about 1981.9215423422. The cubic root of 3928013 is about 157.7820661438.

It can be divided in two parts, 39280 and 13, that added together give a palindrome (39293).

The spelling of 3928013 in words is "three million, nine hundred twenty-eight thousand, thirteen".