94891091 has 2 divisors, whose sum is σ = 94891092. Its totient is φ = 94891090.

The previous prime is 94891081. The next prime is 94891109. The reversal of 94891091 is 19019849.

Together with next prime (94891109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (19019849) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94891091 - 2¹⁰ = 94890067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (94891001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47445545 + 47445546.

It is an arithmetic number, because the mean of its divisors is an integer number (47445546).

Almost surely, 2^94891091 is an apocalyptic number.

94891091 is a deficient number, since it is larger than the sum of its proper divisors (1).

94891091 is an equidigital number, since it uses as much as digits as its factorization.

94891091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 94891091 is about 9741.2058288489. The cubic root of 94891091 is about 456.1158315444.

The spelling of 94891091 in words is "ninety-four million, eight hundred ninety-one thousand, ninety-one".