87194093 has 4 divisors (see below), whose sum is σ = 99650400. Its totient is φ = 74737788.

The previous prime is 87194087. The next prime is 87194099. The reversal of 87194093 is 39049178.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (87194087) and next prime (87194099).

It is a cyclic number.

It is not a de Polignac number, because 87194093 - 2⁸ = 87193837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87194093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87194099) 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, 6228143 + ... + 6228156.

It is an arithmetic number, because the mean of its divisors is an integer number (24912600).

Almost surely, 2^87194093 is an apocalyptic number.

It is an amenable number.

87194093 is a deficient number, since it is larger than the sum of its proper divisors (12456307).

87194093 is a wasteful number, since it uses less digits than its factorization.

87194093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12456306.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 87194093 is about 9337.7777334867. Note that the first 4 decimals coincide. The cubic root of 87194093 is about 443.4340328786.

The spelling of 87194093 in words is "eighty-seven million, one hundred ninety-four thousand, ninety-three".