988477994 has 8 divisors (see below), whose sum is σ = 1694533728. Its totient is φ = 423633420.

The previous prime is 988477991. The next prime is 988477999. The reversal of 988477994 is 499774889.

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

It is a self number, because there is not a number n which added to its sum of digits gives 988477994.

It is not an unprimeable number, because it can be changed into a prime (988477991) 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, 35302772 + ... + 35302799.

It is an arithmetic number, because the mean of its divisors is an integer number (211816716).

Almost surely, 2^988477994 is an apocalyptic number.

988477994 is a deficient number, since it is larger than the sum of its proper divisors (706055734).

988477994 is a wasteful number, since it uses less digits than its factorization.

988477994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70605580.

The product of its digits is 36578304, while the sum is 65.

The square root of 988477994 is about 31440.0698790572. The cubic root of 988477994 is about 996.1444854449.

It can be divided in two parts, 9884 and 77994, that added together give a palindrome (87878).

The spelling of 988477994 in words is "nine hundred eighty-eight million, four hundred seventy-seven thousand, nine hundred ninety-four".