9487339978 has 8 divisors (see below), whose sum is σ = 14615631972. Its totient is φ = 4615462656.

The previous prime is 9487339949. The next prime is 9487340011. The reversal of 9487339978 is 8799337849.

It can be written as a sum of positive squares in 2 ways, for example, as 9463982089 + 23357889 = 97283^2 + 4833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64103575 + ... + 64103722.

Almost surely, 2^9487339978 is an apocalyptic number.

9487339978 is a deficient number, since it is larger than the sum of its proper divisors (5128291994).

9487339978 is a wasteful number, since it uses less digits than its factorization.

9487339978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128207336.

The product of its digits is 82301184, while the sum is 67.

The square root of 9487339978 is about 97402.9772542914. The cubic root of 9487339978 is about 2116.9705735569.

The spelling of 9487339978 in words is "nine billion, four hundred eighty-seven million, three hundred thirty-nine thousand, nine hundred seventy-eight".