87989242 has 8 divisors (see below), whose sum is σ = 143982432. Its totient is φ = 39995100.

The previous prime is 87989221. The next prime is 87989257. The reversal of 87989242 is 24298978.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1999734 + ... + 1999777.

It is an arithmetic number, because the mean of its divisors is an integer number (17997804).

Almost surely, 2^87989242 is an apocalyptic number.

87989242 is a deficient number, since it is larger than the sum of its proper divisors (55993190).

87989242 is a wasteful number, since it uses less digits than its factorization.

87989242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999524.

The product of its digits is 580608, while the sum is 49.

The square root of 87989242 is about 9380.2580987945. The cubic root of 87989242 is about 444.7778919375. Note that the first 3 decimals are identical.

The spelling of 87989242 in words is "eighty-seven million, nine hundred eighty-nine thousand, two hundred forty-two".