91964069 has 4 divisors (see below), whose sum is σ = 92426400. Its totient is φ = 91501740.

The previous prime is 91964053. The next prime is 91964071. The reversal of 91964069 is 96046919.

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 91964069 - 2⁴ = 91964053 is a prime.

It is a super-3 number, since 3×91964069³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91964969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230867 + ... + 231264.

It is an arithmetic number, because the mean of its divisors is an integer number (23106600).

Almost surely, 2^91964069 is an apocalyptic number.

It is an amenable number.

91964069 is a deficient number, since it is larger than the sum of its proper divisors (462331).

91964069 is a wasteful number, since it uses less digits than its factorization.

91964069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462330.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 91964069 is about 9589.7898308566. The cubic root of 91964069 is about 451.3769658306.

The spelling of 91964069 in words is "ninety-one million, nine hundred sixty-four thousand, sixty-nine".