91436493 has 8 divisors (see below), whose sum is σ = 128332000. Its totient is φ = 57749328.

The previous prime is 91436491. The next prime is 91436497. The reversal of 91436493 is 39463419.

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

It is not a de Polignac number, because 91436493 - 2¹ = 91436491 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 (91436491) 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, 802018 + ... + 802131.

It is an arithmetic number, because the mean of its divisors is an integer number (16041500).

Almost surely, 2^91436493 is an apocalyptic number.

It is an amenable number.

91436493 is a deficient number, since it is larger than the sum of its proper divisors (36895507).

91436493 is a wasteful number, since it uses less digits than its factorization.

91436493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604171.

The product of its digits is 69984, while the sum is 39.

The square root of 91436493 is about 9562.2430945882. The cubic root of 91436493 is about 450.5121625457.

The spelling of 91436493 in words is "ninety-one million, four hundred thirty-six thousand, four hundred ninety-three".