989773137 has 12 divisors (see below), whose sum is σ = 1504918480. Its totient is φ = 625119768.

The previous prime is 989773123. The next prime is 989773151. The reversal of 989773137 is 731377989.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (989773123) and next prime (989773151).

It is not a de Polignac number, because 989773137 - 2⁴ = 989773121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989773537) 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, 2893903 + ... + 2894244.

Almost surely, 2^989773137 is an apocalyptic number.

It is an amenable number.

989773137 is a deficient number, since it is larger than the sum of its proper divisors (515145343).

989773137 is a wasteful number, since it uses less digits than its factorization.

989773137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5788172 (or 5788169 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 54.

The square root of 989773137 is about 31460.6601488271. The cubic root of 989773137 is about 996.5793582179.

The spelling of 989773137 in words is "nine hundred eighty-nine million, seven hundred seventy-three thousand, one hundred thirty-seven".