91494309 has 16 divisors (see below), whose sum is σ = 125245440. Its totient is φ = 59389680.

The previous prime is 91494307. The next prime is 91494311. The reversal of 91494309 is 90349419.

It is an interprime number because it is at equal distance from previous prime (91494307) and next prime (91494311).

It is not a de Polignac number, because 91494309 - 2¹ = 91494307 is a prime.

It is a super-3 number, since 3×91494309³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91494301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16524 + ... + 21354.

It is an arithmetic number, because the mean of its divisors is an integer number (7827840).

Almost surely, 2^91494309 is an apocalyptic number.

It is an amenable number.

91494309 is a deficient number, since it is larger than the sum of its proper divisors (33751131).

91494309 is a wasteful number, since it uses less digits than its factorization.

91494309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 91494309 is about 9565.2657568935. The cubic root of 91494309 is about 450.6070966448.

The spelling of 91494309 in words is "ninety-one million, four hundred ninety-four thousand, three hundred nine".