91350849 has 4 divisors (see below), whose sum is σ = 121801136. Its totient is φ = 60900564.

The previous prime is 91350839. The next prime is 91350859. The reversal of 91350849 is 94805319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (91350839) and next prime (91350859).

It is not a de Polignac number, because 91350849 - 2⁸ = 91350593 is a prime.

It is a super-2 number, since 2×91350849² = 16689955226041602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91350839) 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, 15225139 + ... + 15225144.

It is an arithmetic number, because the mean of its divisors is an integer number (30450284).

Almost surely, 2^91350849 is an apocalyptic number.

It is an amenable number.

91350849 is a deficient number, since it is larger than the sum of its proper divisors (30450287).

91350849 is a wasteful number, since it uses less digits than its factorization.

91350849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30450286.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 91350849 is about 9557.7638075023. The cubic root of 91350849 is about 450.3714611871.

The spelling of 91350849 in words is "ninety-one million, three hundred fifty thousand, eight hundred forty-nine".