7828913 has 2 divisors, whose sum is σ = 7828914. Its totient is φ = 7828912.

The previous prime is 7828879. The next prime is 7828921. The reversal of 7828913 is 3198287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5230369 + 2598544 = 2287^2 + 1612^2 .

It is a cyclic number.

It is not a de Polignac number, because 7828913 - 2⁸ = 7828657 is a prime.

It is a super-3 number, since 3×7828913³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (7828943) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3914456 + 3914457.

It is an arithmetic number, because the mean of its divisors is an integer number (3914457).

Almost surely, 2^7828913 is an apocalyptic number.

It is an amenable number.

7828913 is a deficient number, since it is larger than the sum of its proper divisors (1).

7828913 is an equidigital number, since it uses as much as digits as its factorization.

7828913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 7828913 is about 2798.0194781309. The cubic root of 7828913 is about 198.5639890396.

The spelling of 7828913 in words is "seven million, eight hundred twenty-eight thousand, nine hundred thirteen".