91946137 has 4 divisors (see below), whose sum is σ = 92607760. Its totient is φ = 91284516.

The previous prime is 91946117. The next prime is 91946189. The reversal of 91946137 is 73164919.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91946137 - 2¹¹ = 91944089 is a prime.

It is a super-3 number, since 3×91946137³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91946137.

It is not an unprimeable number, because it can be changed into a prime (91946117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330603 + ... + 330880.

It is an arithmetic number, because the mean of its divisors is an integer number (23151940).

Almost surely, 2^91946137 is an apocalyptic number.

It is an amenable number.

91946137 is a deficient number, since it is larger than the sum of its proper divisors (661623).

91946137 is a wasteful number, since it uses less digits than its factorization.

91946137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661622.

The product of its digits is 40824, while the sum is 40.

The square root of 91946137 is about 9588.8548325647. The cubic root of 91946137 is about 451.3476260461.

The spelling of 91946137 in words is "ninety-one million, nine hundred forty-six thousand, one hundred thirty-seven".