91441479 has 8 divisors (see below), whose sum is σ = 123592432. Its totient is φ = 60125760.

The previous prime is 91441477. The next prime is 91441481. The reversal of 91441479 is 97414419.

It is an interprime number because it is at equal distance from previous prime (91441477) and next prime (91441481).

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

It is not a de Polignac number, because 91441479 - 2¹ = 91441477 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 (91441477) 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, 208552 + ... + 208989.

It is an arithmetic number, because the mean of its divisors is an integer number (15449054).

Almost surely, 2^91441479 is an apocalyptic number.

91441479 is a deficient number, since it is larger than the sum of its proper divisors (32150953).

91441479 is a wasteful number, since it uses less digits than its factorization.

91441479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417617.

The product of its digits is 36288, while the sum is 39.

The square root of 91441479 is about 9562.5038039208. The cubic root of 91441479 is about 450.5203511538.

The spelling of 91441479 in words is "ninety-one million, four hundred forty-one thousand, four hundred seventy-nine".