9976555 has 4 divisors (see below), whose sum is σ = 11971872. Its totient is φ = 7981240.

The previous prime is 9976553. The next prime is 9976591. The reversal of 9976555 is 5556799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5556799 = 2143 ⋅2593.

It is not a de Polignac number, because 9976555 - 2¹ = 9976553 is a prime.

It is a Duffinian number.

9976555 is a lucky number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9976553) 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 3 ways as a sum of consecutive naturals, for example, 997651 + ... + 997660.

It is an arithmetic number, because the mean of its divisors is an integer number (2992968).

Almost surely, 2^9976555 is an apocalyptic number.

9976555 is a deficient number, since it is larger than the sum of its proper divisors (1995317).

9976555 is a wasteful number, since it uses less digits than its factorization.

9976555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995316.

The product of its digits is 425250, while the sum is 46.

The square root of 9976555 is about 3158.5685048769. The cubic root of 9976555 is about 215.2749681801.

The spelling of 9976555 in words is "nine million, nine hundred seventy-six thousand, five hundred fifty-five".