980238891 has 16 divisors (see below), whose sum is σ = 1348257024. Its totient is φ = 633013344.

The previous prime is 980238871. The next prime is 980238901. The reversal of 980238891 is 198832089.

It is a happy number.

980238891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 980238891 - 2⁵ = 980238859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 980238891.

It is not an unprimeable number, because it can be changed into a prime (980238841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5746 + ... + 44648.

It is an arithmetic number, because the mean of its divisors is an integer number (84266064).

Almost surely, 2^980238891 is an apocalyptic number.

980238891 is a deficient number, since it is larger than the sum of its proper divisors (368018133).

980238891 is a wasteful number, since it uses less digits than its factorization.

980238891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39170.

The product of its (nonzero) digits is 248832, while the sum is 48.

The square root of 980238891 is about 31308.7669990372. The cubic root of 980238891 is about 993.3690919092.

The spelling of 980238891 in words is "nine hundred eighty million, two hundred thirty-eight thousand, eight hundred ninety-one".