8890978539 has 4 divisors (see below), whose sum is σ = 11854638056. Its totient is φ = 5927319024.

The previous prime is 8890978531. The next prime is 8890978583. The reversal of 8890978539 is 9358790988.

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

It is not a de Polignac number, because 8890978539 - 2³ = 8890978531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8890978539.

It is not an unprimeable number, because it can be changed into a prime (8890978531) 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, 1481829754 + ... + 1481829759.

It is an arithmetic number, because the mean of its divisors is an integer number (2963659514).

Almost surely, 2^8890978539 is an apocalyptic number.

8890978539 is a deficient number, since it is larger than the sum of its proper divisors (2963659517).

8890978539 is a wasteful number, since it uses less digits than its factorization.

8890978539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963659516.

The product of its (nonzero) digits is 39191040, while the sum is 66.

The square root of 8890978539 is about 94291.9855502046. The cubic root of 8890978539 is about 2071.6506503029.

The spelling of 8890978539 in words is "eight billion, eight hundred ninety million, nine hundred seventy-eight thousand, five hundred thirty-nine".