91948617 has 6 divisors (see below), whose sum is σ = 132814682. Its totient is φ = 61299072.

The previous prime is 91948601. The next prime is 91948627. The reversal of 91948617 is 71684919.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 90269001 + 1679616 = 9501^2 + 1296^2 .

It is not a de Polignac number, because 91948617 - 2⁴ = 91948601 is a prime.

It is a super-3 number, since 3×91948617³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91948627) 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 in 5 ways as a sum of consecutive naturals, for example, 5108248 + ... + 5108265.

Almost surely, 2^91948617 is an apocalyptic number.

It is an amenable number.

91948617 is a deficient number, since it is larger than the sum of its proper divisors (40866065).

91948617 is a wasteful number, since it uses less digits than its factorization.

91948617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10216519 (or 10216516 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 91948617 is about 9588.9841484904. The cubic root of 91948617 is about 451.3516839728.

The spelling of 91948617 in words is "ninety-one million, nine hundred forty-eight thousand, six hundred seventeen".