91954109 has 8 divisors (see below), whose sum is σ = 99240960. Its totient is φ = 84697776.

The previous prime is 91954097. The next prime is 91954111. The reversal of 91954109 is 90145919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91954109 - 2¹² = 91950013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91954169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157 + ... + 13610.

It is an arithmetic number, because the mean of its divisors is an integer number (12405120).

Almost surely, 2^91954109 is an apocalyptic number.

It is an amenable number.

91954109 is a deficient number, since it is larger than the sum of its proper divisors (7286851).

91954109 is a wasteful number, since it uses less digits than its factorization.

91954109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15259.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 91954109 is about 9589.2705144865. The cubic root of 91954109 is about 451.3606700572.

The spelling of 91954109 in words is "ninety-one million, nine hundred fifty-four thousand, one hundred nine".