9980534 has 4 divisors (see below), whose sum is σ = 14970804. Its totient is φ = 4990266.

The previous prime is 9980519. The next prime is 9980539. The reversal of 9980534 is 4350899.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×9980534² = 199222117850312, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9980539) 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 as a sum of consecutive naturals, namely, 2495132 + ... + 2495135.

It is an arithmetic number, because the mean of its divisors is an integer number (3742701).

Almost surely, 2^9980534 is an apocalyptic number.

9980534 is a deficient number, since it is larger than the sum of its proper divisors (4990270).

9980534 is a wasteful number, since it uses less digits than its factorization.

9980534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4990269.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 9980534 is about 3159.1983160289. The cubic root of 9980534 is about 215.3035841117.

The spelling of 9980534 in words is "nine million, nine hundred eighty thousand, five hundred thirty-four".