9985977 has 8 divisors (see below), whose sum is σ = 14794080. Its totient is φ = 6657300.

The previous prime is 9985973. The next prime is 9985993. The reversal of 9985977 is 7795899.

It is not a de Polignac number, because 9985977 - 2² = 9985973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9985973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184899 + ... + 184952.

It is an arithmetic number, because the mean of its divisors is an integer number (1849260).

Almost surely, 2^9985977 is an apocalyptic number.

It is an amenable number.

9985977 is a deficient number, since it is larger than the sum of its proper divisors (4808103).

9985977 is a wasteful number, since it uses less digits than its factorization.

9985977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369860 (or 369854 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 54.

The square root of 9985977 is about 3160.0596513357. The cubic root of 9985977 is about 215.3427164345.

The spelling of 9985977 in words is "nine million, nine hundred eighty-five thousand, nine hundred seventy-seven".