988778932 has 6 divisors (see below), whose sum is σ = 1730363138. Its totient is φ = 494389464.

The previous prime is 988778881. The next prime is 988778933. The reversal of 988778932 is 239877889.

It can be written as a sum of positive squares in only one way, i.e., 973065636 + 15713296 = 31194^2 + 3964^2 .

It is a super-3 number, since 3×988778932³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988778933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123597363 + ... + 123597370.

Almost surely, 2^988778932 is an apocalyptic number.

It is an amenable number.

988778932 is a deficient number, since it is larger than the sum of its proper divisors (741584206).

988778932 is a wasteful number, since it uses less digits than its factorization.

988778932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247194737 (or 247194735 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 61.

The square root of 988778932 is about 31444.8554138829. The cubic root of 988778932 is about 996.2455658649.

The spelling of 988778932 in words is "nine hundred eighty-eight million, seven hundred seventy-eight thousand, nine hundred thirty-two".