87109390 has 8 divisors (see below), whose sum is σ = 156796920. Its totient is φ = 34843752.

The previous prime is 87109339. The next prime is 87109391. The reversal of 87109390 is 9390178.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87109391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4355460 + ... + 4355479.

It is an arithmetic number, because the mean of its divisors is an integer number (19599615).

Almost surely, 2^87109390 is an apocalyptic number.

87109390 is a deficient number, since it is larger than the sum of its proper divisors (69687530).

87109390 is a wasteful number, since it uses less digits than its factorization.

87109390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8710946.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 87109390 is about 9333.2411304970. The cubic root of 87109390 is about 443.2903979123.

The spelling of 87109390 in words is "eighty-seven million, one hundred nine thousand, three hundred ninety".