94387891393 has 4 divisors (see below), whose sum is σ = 94389197188. Its totient is φ = 94386585600.

The previous prime is 94387891379. The next prime is 94387891397. The reversal of 94387891393 is 39319878349.

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: 39319878349 = 149 ⋅263891801.

It can be written as a sum of positive squares in 2 ways, for example, as 57913385104 + 36474506289 = 240652^2 + 190983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94387891393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94387891397) 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, 537696 + ... + 691297.

It is an arithmetic number, because the mean of its divisors is an integer number (23597299297).

Almost surely, 2^94387891393 is an apocalyptic number.

It is an amenable number.

94387891393 is a deficient number, since it is larger than the sum of its proper divisors (1305795).

94387891393 is a wasteful number, since it uses less digits than its factorization.

94387891393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305794.

The product of its digits is 35271936, while the sum is 64.

The spelling of 94387891393 in words is "ninety-four billion, three hundred eighty-seven million, eight hundred ninety-one thousand, three hundred ninety-three".