91962971 has 2 divisors, whose sum is σ = 91962972. Its totient is φ = 91962970.

The previous prime is 91962961. The next prime is 91963009. The reversal of 91962971 is 17926919.

It is a weak prime.

It is an emirp because it is prime and its reverse (17926919) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91962971 - 2¹⁴ = 91946587 is a prime.

It is a super-3 number, since 3×91962971³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (91962931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45981485 + 45981486.

It is an arithmetic number, because the mean of its divisors is an integer number (45981486).

Almost surely, 2^91962971 is an apocalyptic number.

91962971 is a deficient number, since it is larger than the sum of its proper divisors (1).

91962971 is an equidigital number, since it uses as much as digits as its factorization.

91962971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 44.

The square root of 91962971 is about 9589.7325822986. The cubic root of 91962971 is about 451.3751694266.

It can be divided in two parts, 9196 and 2971, that added together give a cube (12167 = 23³).

The spelling of 91962971 in words is "ninety-one million, nine hundred sixty-two thousand, nine hundred seventy-one".