9390640992 has 48 divisors (see below), whose sum is σ = 24655906800. Its totient is φ = 3129518592.

The previous prime is 9390640969. The next prime is 9390641009. The reversal of 9390640992 is 2990460939.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604134 + ... + 619482.

It is an arithmetic number, because the mean of its divisors is an integer number (513664725).

Almost surely, 2^9390640992 is an apocalyptic number.

It is an amenable number.

9390640992 is an abundant number, since it is smaller than the sum of its proper divisors (15265265808).

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

9390640992 is a wasteful number, since it uses less digits than its factorization.

9390640992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21735 (or 21727 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 51.

The square root of 9390640992 is about 96905.3197301366. The cubic root of 9390640992 is about 2109.7536449348.

The spelling of 9390640992 in words is "nine billion, three hundred ninety million, six hundred forty thousand, nine hundred ninety-two".