9990546 has 8 divisors (see below), whose sum is σ = 19981104. Its totient is φ = 3330180.

The previous prime is 9990499. The next prime is 9990551. The reversal of 9990546 is 6450999.

It is a happy number.

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

9990546 is an admirable number.

It is a super-2 number, since 2×9990546² = 199622018756232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9990498 and 9990507.

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, 832540 + ... + 832551.

It is an arithmetic number, because the mean of its divisors is an integer number (2497638).

Almost surely, 2^9990546 is an apocalyptic number.

9990546 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9990546 is a wasteful number, since it uses less digits than its factorization.

9990546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665096.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 9990546 is about 3160.7824980533. The cubic root of 9990546 is about 215.3755541779.

The spelling of 9990546 in words is "nine million, nine hundred ninety thousand, five hundred forty-six".