988649269 has 4 divisors (see below), whose sum is σ = 988793440. Its totient is φ = 988505100.

The previous prime is 988649267. The next prime is 988649281. The reversal of 988649269 is 962946889.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 988649269 - 2¹ = 988649267 is a prime.

It is a super-2 number, since 2×988649269² = 1954854754188468722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988649261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61257 + ... + 75694.

It is an arithmetic number, because the mean of its divisors is an integer number (247198360).

Almost surely, 2^988649269 is an apocalyptic number.

It is an amenable number.

988649269 is a deficient number, since it is larger than the sum of its proper divisors (144171).

988649269 is a wasteful number, since it uses less digits than its factorization.

988649269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144170.

The product of its digits is 13436928, while the sum is 61.

The square root of 988649269 is about 31442.7935940813. The cubic root of 988649269 is about 996.2020165835.

The spelling of 988649269 in words is "nine hundred eighty-eight million, six hundred forty-nine thousand, two hundred sixty-nine".