9890001012 has 48 divisors (see below), whose sum is σ = 24305121792. Its totient is φ = 3123853920.

The previous prime is 9890000977. The next prime is 9890001013. The reversal of 9890001012 is 2101000989.

It is a super-2 number, since 2×9890001012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9890001013) 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, 137914 + ... + 196977.

It is an arithmetic number, because the mean of its divisors is an integer number (506356704).

Almost surely, 2^9890001012 is an apocalyptic number.

9890001012 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

9890001012 is an abundant number, since it is smaller than the sum of its proper divisors (14415120780).

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

9890001012 is a wasteful number, since it uses less digits than its factorization.

9890001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335028 (or 335026 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 9890001012 is about 99448.4842116761. The cubic root of 9890001012 is about 2146.5060258870.

The spelling of 9890001012 in words is "nine billion, eight hundred ninety million, one thousand, twelve".