7950991 has 2 divisors, whose sum is σ = 7950992. Its totient is φ = 7950990.

The previous prime is 7950979. The next prime is 7950997. The reversal of 7950991 is 1990597.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7950991 - 2⁷ = 7950863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7950997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3975495 + 3975496.

It is an arithmetic number, because the mean of its divisors is an integer number (3975496).

Almost surely, 2^7950991 is an apocalyptic number.

7950991 is a deficient number, since it is larger than the sum of its proper divisors (1).

7950991 is an equidigital number, since it uses as much as digits as its factorization.

7950991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 7950991 is about 2819.7501662381. The cubic root of 7950991 is about 199.5907548298.

The spelling of 7950991 in words is "seven million, nine hundred fifty thousand, nine hundred ninety-one".