87231440990 has 8 divisors (see below), whose sum is σ = 157016593800. Its totient is φ = 34892576392.

The previous prime is 87231440983. The next prime is 87231441007. The reversal of 87231440990 is 9904413278.

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

It is a congruent number.

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, 4361572040 + ... + 4361572059.

It is an arithmetic number, because the mean of its divisors is an integer number (19627074225).

Almost surely, 2^87231440990 is an apocalyptic number.

87231440990 is a deficient number, since it is larger than the sum of its proper divisors (69785152810).

87231440990 is a wasteful number, since it uses less digits than its factorization.

87231440990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8723144106.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 87231440990 in words is "eighty-seven billion, two hundred thirty-one million, four hundred forty thousand, nine hundred ninety".