988278947 has 8 divisors (see below), whose sum is σ = 992984112. Its totient is φ = 983584800.

The previous prime is 988278931. The next prime is 988278979. The reversal of 988278947 is 749872889.

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

It is a cyclic number.

It is not a de Polignac number, because 988278947 - 2⁴ = 988278931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 988278947.

It is not an unprimeable number, because it can be changed into a prime (988278997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216533 + ... + 221049.

It is an arithmetic number, because the mean of its divisors is an integer number (124123014).

Almost surely, 2^988278947 is an apocalyptic number.

988278947 is a deficient number, since it is larger than the sum of its proper divisors (4705165).

988278947 is a wasteful number, since it uses less digits than its factorization.

988278947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5509.

The product of its digits is 16257024, while the sum is 62.

The square root of 988278947 is about 31436.9042209948. The cubic root of 988278947 is about 996.0776173632.

The spelling of 988278947 in words is "nine hundred eighty-eight million, two hundred seventy-eight thousand, nine hundred forty-seven".