91845214 has 4 divisors (see below), whose sum is σ = 137767824. Its totient is φ = 45922606.

The previous prime is 91845209. The next prime is 91845217. The reversal of 91845214 is 41254819.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41254819 = 4447 ⋅9277.

It is a self number, because there is not a number n which added to its sum of digits gives 91845214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91845217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22961302 + ... + 22961305.

It is an arithmetic number, because the mean of its divisors is an integer number (34441956).

Almost surely, 2^91845214 is an apocalyptic number.

91845214 is a deficient number, since it is larger than the sum of its proper divisors (45922610).

91845214 is a wasteful number, since it uses less digits than its factorization.

91845214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45922609.

The product of its digits is 11520, while the sum is 34.

The square root of 91845214 is about 9583.5908719018. The cubic root of 91845214 is about 451.1824277597.

The spelling of 91845214 in words is "ninety-one million, eight hundred forty-five thousand, two hundred fourteen".