91279141 has 4 divisors (see below), whose sum is σ = 91298284. Its totient is φ = 91260000.

The previous prime is 91279129. The next prime is 91279163. The reversal of 91279141 is 14197219.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16370116 + 74909025 = 4046^2 + 8655^2 .

It is a cyclic number.

It is not a de Polignac number, because 91279141 - 2¹¹ = 91277093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91279097 and 91279106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91279121) 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, 3931 + ... + 14071.

It is an arithmetic number, because the mean of its divisors is an integer number (22824571).

Almost surely, 2^91279141 is an apocalyptic number.

It is an amenable number.

91279141 is a deficient number, since it is larger than the sum of its proper divisors (19143).

91279141 is a wasteful number, since it uses less digits than its factorization.

91279141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19142.

The product of its digits is 4536, while the sum is 34.

The square root of 91279141 is about 9554.0117751654. The cubic root of 91279141 is about 450.2535871111.

The spelling of 91279141 in words is "ninety-one million, two hundred seventy-nine thousand, one hundred forty-one".