980120899 has 4 divisors (see below), whose sum is σ = 982640880. Its totient is φ = 977600920.

The previous prime is 980120807. The next prime is 980120923. The reversal of 980120899 is 998021089.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 980120899 - 2²¹ = 978023747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980120299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1259407 + ... + 1260184.

It is an arithmetic number, because the mean of its divisors is an integer number (245660220).

Almost surely, 2^980120899 is an apocalyptic number.

980120899 is a deficient number, since it is larger than the sum of its proper divisors (2519981).

980120899 is a wasteful number, since it uses less digits than its factorization.

980120899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519980.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 980120899 is about 31306.8826138918. The cubic root of 980120899 is about 993.3292328129.

The spelling of 980120899 in words is "nine hundred eighty million, one hundred twenty thousand, eight hundred ninety-nine".