93681993 has 16 divisors (see below), whose sum is σ = 128116736. Its totient is φ = 60858000.

The previous prime is 93681983. The next prime is 93682003. The reversal of 93681993 is 39918639.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (93681983) and next prime (93682003).

It is not a de Polignac number, because 93681993 - 2⁵ = 93681961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93681923) 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, 96396 + ... + 97362.

It is an arithmetic number, because the mean of its divisors is an integer number (8007296).

Almost surely, 2^93681993 is an apocalyptic number.

It is an amenable number.

93681993 is a deficient number, since it is larger than the sum of its proper divisors (34434743).

93681993 is a wasteful number, since it uses less digits than its factorization.

93681993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764.

The product of its digits is 314928, while the sum is 48.

The square root of 93681993 is about 9678.9458620244. The cubic root of 93681993 is about 454.1702754850.

The spelling of 93681993 in words is "ninety-three million, six hundred eighty-one thousand, nine hundred ninety-three".