7828091 has 2 divisors, whose sum is σ = 7828092. Its totient is φ = 7828090.

The previous prime is 7828087. The next prime is 7828099. The reversal of 7828091 is 1908287.

It is a happy number.

7828091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7828091 - 2² = 7828087 is a prime.

It is a super-2 number, since 2×7828091² = 122558017408562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7828099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3914045 + 3914046.

It is an arithmetic number, because the mean of its divisors is an integer number (3914046).

Almost surely, 2^7828091 is an apocalyptic number.

7828091 is a deficient number, since it is larger than the sum of its proper divisors (1).

7828091 is an equidigital number, since it uses as much as digits as its factorization.

7828091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 7828091 is about 2797.8725846614. The cubic root of 7828091 is about 198.5570393600.

The spelling of 7828091 in words is "seven million, eight hundred twenty-eight thousand, ninety-one".