87917442 has 8 divisors (see below), whose sum is σ = 175834896. Its totient is φ = 29305812.

The previous prime is 87917411. The next prime is 87917443. The reversal of 87917442 is 24471978.

It is a happy number.

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

87917442 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 87917394 and 87917403.

It is not an unprimeable number, because it can be changed into a prime (87917443) 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, 7326448 + ... + 7326459.

It is an arithmetic number, because the mean of its divisors is an integer number (21979362).

Almost surely, 2^87917442 is an apocalyptic number.

87917442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87917442 is a wasteful number, since it uses less digits than its factorization.

87917442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14652912.

The product of its digits is 112896, while the sum is 42.

The square root of 87917442 is about 9376.4301309187. The cubic root of 87917442 is about 444.6568781170.

The spelling of 87917442 in words is "eighty-seven million, nine hundred seventeen thousand, four hundred forty-two".