9987090 has 16 divisors (see below), whose sum is σ = 23969088. Its totient is φ = 2663216.

The previous prime is 9987071. The next prime is 9987091. The reversal of 9987090 is 907899.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9987091) 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, 166422 + ... + 166481.

It is an arithmetic number, because the mean of its divisors is an integer number (1498068).

Almost surely, 2^9987090 is an apocalyptic number.

9987090 is an abundant number, since it is smaller than the sum of its proper divisors (13981998).

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

9987090 is a wasteful number, since it uses less digits than its factorization.

9987090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332913.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 9987090 is about 3160.2357506996. The cubic root of 9987090 is about 215.3507165711.

The spelling of 9987090 in words is "nine million, nine hundred eighty-seven thousand, ninety".