9977385 has 32 divisors (see below), whose sum is σ = 18444672. Its totient is φ = 4551680.

The previous prime is 9977371. The next prime is 9977389. The reversal of 9977385 is 5837799.

It is not a de Polignac number, because 9977385 - 2⁶ = 9977321 is a prime.

It is a super-2 number, since 2×9977385² = 199096422876450, which contains 22 as substring.

It is a Curzon number.

9977385 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9977389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1027 + ... + 4583.

It is an arithmetic number, because the mean of its divisors is an integer number (576396).

Almost surely, 2^9977385 is an apocalyptic number.

It is an amenable number.

9977385 is a deficient number, since it is larger than the sum of its proper divisors (8467287).

9977385 is a wasteful number, since it uses less digits than its factorization.

9977385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593.

The product of its digits is 476280, while the sum is 48.

The square root of 9977385 is about 3158.6998907778. The cubic root of 9977385 is about 215.2809379518.

The spelling of 9977385 in words is "nine million, nine hundred seventy-seven thousand, three hundred eighty-five".