9987402 has 32 divisors (see below), whose sum is σ = 20606400. Its totient is φ = 3225728.

The previous prime is 9987391. The next prime is 9987403. The reversal of 9987402 is 2047899.

It is not an unprimeable number, because it can be changed into a prime (9987403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31348 + ... + 31664.

It is an arithmetic number, because the mean of its divisors is an integer number (643950).

Almost surely, 2^9987402 is an apocalyptic number.

9987402 is an abundant number, since it is smaller than the sum of its proper divisors (10618998).

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

9987402 is a wasteful number, since it uses less digits than its factorization.

9987402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 9987402 is about 3160.2851137200. The cubic root of 9987402 is about 215.3529590903.

The spelling of 9987402 in words is "nine million, nine hundred eighty-seven thousand, four hundred two".