980172987 has 16 divisors (see below), whose sum is σ = 1325783040. Its totient is φ = 644035392.

The previous prime is 980172967. The next prime is 980172997. The reversal of 980172987 is 789271089.

980172987 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 980172987 - 2⁶ = 980172923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (980172967) 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, 142878 + ... + 149580.

It is an arithmetic number, because the mean of its divisors is an integer number (82861440).

Almost surely, 2^980172987 is an apocalyptic number.

980172987 is a deficient number, since it is larger than the sum of its proper divisors (345610053).

980172987 is a wasteful number, since it uses less digits than its factorization.

980172987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7402.

The product of its (nonzero) digits is 508032, while the sum is 51.

The square root of 980172987 is about 31307.7144965901. The cubic root of 980172987 is about 993.3468291512.

The spelling of 980172987 in words is "nine hundred eighty million, one hundred seventy-two thousand, nine hundred eighty-seven".