87841393 has 8 divisors (see below), whose sum is σ = 93897216. Its totient is φ = 81972000.

The previous prime is 87841379. The next prime is 87841399. The reversal of 87841393 is 39314878.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87841393 - 2⁵ = 87841361 is a prime.

It is a super-3 number, since 3×87841393³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (87841399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45633 + ... + 47518.

It is an arithmetic number, because the mean of its divisors is an integer number (11737152).

Almost surely, 2^87841393 is an apocalyptic number.

It is an amenable number.

87841393 is a deficient number, since it is larger than the sum of its proper divisors (6055823).

87841393 is a wasteful number, since it uses less digits than its factorization.

87841393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93215.

The product of its digits is 145152, while the sum is 43.

The square root of 87841393 is about 9372.3739255324. The cubic root of 87841393 is about 444.5286310362.

The spelling of 87841393 in words is "eighty-seven million, eight hundred forty-one thousand, three hundred ninety-three".