91442485 has 8 divisors (see below), whose sum is σ = 109912536. Its totient is φ = 73032960.

The previous prime is 91442441. The next prime is 91442489. The reversal of 91442485 is 58424419.

It can be written as a sum of positive squares in 4 ways, for example, as 7518564 + 83923921 = 2742^2 + 9161^2 .

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

It is not a de Polignac number, because 91442485 - 2²³ = 83053877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91442489) 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, 11736 + ... + 17905.

It is an arithmetic number, because the mean of its divisors is an integer number (13739067).

Almost surely, 2^91442485 is an apocalyptic number.

It is an amenable number.

91442485 is a deficient number, since it is larger than the sum of its proper divisors (18470051).

91442485 is a wasteful number, since it uses less digits than its factorization.

91442485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30263.

The product of its digits is 46080, while the sum is 37.

The square root of 91442485 is about 9562.5564050624. The cubic root of 91442485 is about 450.5220032917.

The spelling of 91442485 in words is "ninety-one million, four hundred forty-two thousand, four hundred eighty-five".