93904091 has 4 divisors (see below), whose sum is σ = 94579800. Its totient is φ = 93228384.

The previous prime is 93904081. The next prime is 93904093. The reversal of 93904091 is 19040939.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19040939 = 53 ⋅359263.

It is a cyclic number.

It is not a de Polignac number, because 93904091 - 2¹⁰ = 93903067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93904093) 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, 337646 + ... + 337923.

It is an arithmetic number, because the mean of its divisors is an integer number (23644950).

Almost surely, 2^93904091 is an apocalyptic number.

93904091 is a deficient number, since it is larger than the sum of its proper divisors (675709).

93904091 is a wasteful number, since it uses less digits than its factorization.

93904091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675708.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 93904091 is about 9690.4123235289. The cubic root of 93904091 is about 454.5289025742.

The spelling of 93904091 in words is "ninety-three million, nine hundred four thousand, ninety-one".