91997848 has 16 divisors (see below), whose sum is σ = 181575000. Its totient is φ = 43577856.

The previous prime is 91997833. The next prime is 91997869. The reversal of 91997848 is 84879919.

It is a super-2 number, since 2×91997848² = 16927208073262208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302473 + ... + 302776.

Almost surely, 2^91997848 is an apocalyptic number.

It is an amenable number.

91997848 is a deficient number, since it is larger than the sum of its proper divisors (89577152).

91997848 is a wasteful number, since it uses less digits than its factorization.

91997848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605274 (or 605270 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 55.

The square root of 91997848 is about 9591.5508652147. The cubic root of 91997848 is about 451.4322236297.

The spelling of 91997848 in words is "ninety-one million, nine hundred ninety-seven thousand, eight hundred forty-eight".