9889977 has 8 divisors (see below), whose sum is σ = 13760064. Its totient is φ = 6306608.

The previous prime is 9889969. The next prime is 9889981. The reversal of 9889977 is 7799889.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 9889977 - 2³ = 9889969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9889927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71598 + ... + 71735.

It is an arithmetic number, because the mean of its divisors is an integer number (1720008).

Almost surely, 2^9889977 is an apocalyptic number.

It is an amenable number.

9889977 is a deficient number, since it is larger than the sum of its proper divisors (3870087).

9889977 is a wasteful number, since it uses less digits than its factorization.

9889977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143359.

The product of its digits is 2286144, while the sum is 57.

The square root of 9889977 is about 3144.8333819139. The cubic root of 9889977 is about 214.6504288713.

The spelling of 9889977 in words is "nine million, eight hundred eighty-nine thousand, nine hundred seventy-seven".