9940090000 has 75 divisors (see below), whose sum is σ = 24090114477. Its totient is φ = 3972048000.

The previous prime is 9940089911. The next prime is 9940090037. The reversal of 9940090000 is 900499.

The square root of 9940090000 is 99700.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 3796038544 + 6144051456 = 61612^2 + 78384^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 9969502 + ... + 9970498.

Almost surely, 2^9940090000 is an apocalyptic number.

9940090000 is the 99700-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9940090000

9940090000 is an abundant number, since it is smaller than the sum of its proper divisors (14150024477).

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

9940090000 is an frugal number, since it uses more digits than its factorization.

9940090000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The cubic root of 9940090000 is about 2150.1236633395.

Multiplying 9940090000 by its product of nonzero digits (2916), we get a square (28985302440000 = 5383800²).

Adding to 9940090000 its reverse (900499), we get a palindrome (9940990499).

The spelling of 9940090000 in words is "nine billion, nine hundred forty million, ninety thousand".