9937940578 has 4 divisors (see below), whose sum is σ = 14906910870. Its totient is φ = 4968970288.

The previous prime is 9937940567. The next prime is 9937940581. The reversal of 9937940578 is 8750497399.

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

It can be written as a sum of positive squares in only one way, i.e., 9851952049 + 85988529 = 99257^2 + 9273^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2484485143 + ... + 2484485146.

Almost surely, 2^9937940578 is an apocalyptic number.

9937940578 is a deficient number, since it is larger than the sum of its proper divisors (4968970292).

9937940578 is a wasteful number, since it uses less digits than its factorization.

9937940578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968970291.

The product of its (nonzero) digits is 17146080, while the sum is 61.

The square root of 9937940578 is about 99689.2199688612. The cubic root of 9937940578 is about 2149.9686729165.

The spelling of 9937940578 in words is "nine billion, nine hundred thirty-seven million, nine hundred forty thousand, five hundred seventy-eight".