9977388 has 24 divisors (see below), whose sum is σ = 23331840. Its totient is φ = 3318480.

The previous prime is 9977371. The next prime is 9977389. The reversal of 9977388 is 8837799.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9977388.

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 7 ways as a sum of consecutive naturals, for example, 9573 + ... + 10563.

It is an arithmetic number, because the mean of its divisors is an integer number (972160).

Almost surely, 2^9977388 is an apocalyptic number.

It is an amenable number.

9977388 is an abundant number, since it is smaller than the sum of its proper divisors (13354452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9977388 is a wasteful number, since it uses less digits than its factorization.

9977388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837 (or 1835 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 9977388 is about 3158.7003656567. The cubic root of 9977388 is about 215.2809595287.

It can be divided in two parts, 997 and 7388, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 9977388 in words is "nine million, nine hundred seventy-seven thousand, three hundred eighty-eight".