989909307 has 12 divisors (see below), whose sum is σ = 1430142480. Its totient is φ = 659813328.

The previous prime is 989909251. The next prime is 989909317. The reversal of 989909307 is 703909989.

It is a happy number.

It is not a de Polignac number, because 989909307 - 2¹⁴ = 989892923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (989909317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81813 + ... + 93129.

It is an arithmetic number, because the mean of its divisors is an integer number (119178540).

Almost surely, 2^989909307 is an apocalyptic number.

989909307 is a deficient number, since it is larger than the sum of its proper divisors (440233173).

989909307 is a wasteful number, since it uses less digits than its factorization.

989909307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21042 (or 21039 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 989909307 is about 31462.8242057194. The cubic root of 989909307 is about 996.6250582486.

The spelling of 989909307 in words is "nine hundred eighty-nine million, nine hundred nine thousand, three hundred seven".