87368393 has 4 divisors (see below), whose sum is σ = 99849600. Its totient is φ = 74887188.

The previous prime is 87368383. The next prime is 87368399. The reversal of 87368393 is 39386378.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39386378 = 2 ⋅19693189.

It is a cyclic number.

It is not a de Polignac number, because 87368393 - 2⁴ = 87368377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87368399) 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, 6240593 + ... + 6240606.

It is an arithmetic number, because the mean of its divisors is an integer number (24962400).

Almost surely, 2^87368393 is an apocalyptic number.

It is an amenable number.

87368393 is a deficient number, since it is larger than the sum of its proper divisors (12481207).

87368393 is a wasteful number, since it uses less digits than its factorization.

87368393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12481206.

The product of its digits is 653184, while the sum is 47.

The square root of 87368393 is about 9347.1061297067. The cubic root of 87368393 is about 443.7293094102.

The spelling of 87368393 in words is "eighty-seven million, three hundred sixty-eight thousand, three hundred ninety-three".