95997991 has 2 divisors, whose sum is σ = 95997992. Its totient is φ = 95997990.

The previous prime is 95997983. The next prime is 95998009. The reversal of 95997991 is 19979959.

It is a weak prime.

It is an emirp because it is prime and its reverse (19979959) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 95997991 - 2³ = 95997983 is a prime.

It is a super-2 number, since 2×95997991² = 18431228552072162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (95997911) 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, 47998995 + 47998996.

It is an arithmetic number, because the mean of its divisors is an integer number (47998996).

Almost surely, 2^95997991 is an apocalyptic number.

95997991 is a deficient number, since it is larger than the sum of its proper divisors (1).

95997991 is an equidigital number, since it uses as much as digits as its factorization.

95997991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2066715, while the sum is 58.

The square root of 95997991 is about 9797.8564492444. The cubic root of 95997991 is about 457.8825029283.

The spelling of 95997991 in words is "ninety-five million, nine hundred ninety-seven thousand, nine hundred ninety-one".