980428843 has 4 divisors (see below), whose sum is σ = 1023056208. Its totient is φ = 937801480.

The previous prime is 980428837. The next prime is 980428871. The reversal of 980428843 is 348824089.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980428843 is a prime.

It is a super-2 number, since 2×980428843² = 1922481432372637298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 980428793 and 980428802.

It is not an unprimeable number, because it can be changed into a prime (980428543) 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, 21313648 + ... + 21313693.

It is an arithmetic number, because the mean of its divisors is an integer number (255764052).

Almost surely, 2^980428843 is an apocalyptic number.

980428843 is a deficient number, since it is larger than the sum of its proper divisors (42627365).

980428843 is a wasteful number, since it uses less digits than its factorization.

980428843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42627364.

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 980428843 is about 31311.8003794097. The cubic root of 980428843 is about 993.4332532276.

The spelling of 980428843 in words is "nine hundred eighty million, four hundred twenty-eight thousand, eight hundred forty-three".