9894990 has 32 divisors (see below), whose sum is σ = 27141120. Its totient is φ = 2261664.

The previous prime is 9894979. The next prime is 9895001. The reversal of 9894990 is 994989.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9894979) and next prime (9895001).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23350 + ... + 23769.

It is an arithmetic number, because the mean of its divisors is an integer number (848160).

Almost surely, 2^9894990 is an apocalyptic number.

9894990 is an abundant number, since it is smaller than the sum of its proper divisors (17246130).

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

9894990 is a wasteful number, since it uses less digits than its factorization.

9894990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47136.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 9894990 is about 3145.6303024990. The cubic root of 9894990 is about 214.6866898537.

The spelling of 9894990 in words is "nine million, eight hundred ninety-four thousand, nine hundred ninety".