9940030997 has 4 divisors (see below), whose sum is σ = 10704648780. Its totient is φ = 9175413216.

The previous prime is 9940030993. The next prime is 9940030999. The reversal of 9940030997 is 7990300499.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4921583716 + 5018447281 = 70154^2 + 70841^2 .

It is a cyclic number.

It is not a de Polignac number, because 9940030997 - 2² = 9940030993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9940030993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382308872 + ... + 382308897.

It is an arithmetic number, because the mean of its divisors is an integer number (2676162195).

Almost surely, 2^9940030997 is an apocalyptic number.

It is an amenable number.

9940030997 is a deficient number, since it is larger than the sum of its proper divisors (764617783).

9940030997 is a wasteful number, since it uses less digits than its factorization.

9940030997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764617782.

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 9940030997 is about 99699.7040968528. The cubic root of 9940030997 is about 2150.1194090522.

The spelling of 9940030997 in words is "nine billion, nine hundred forty million, thirty thousand, nine hundred ninety-seven".