980847869 has 4 divisors (see below), whose sum is σ = 986267100. Its totient is φ = 975428640.

The previous prime is 980847851. The next prime is 980847877. The reversal of 980847869 is 968748089.

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

It can be written as a sum of positive squares in 2 ways, for example, as 95785369 + 885062500 = 9787^2 + 29750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980847869 is a prime.

It is a super-2 number, since 2×980847869² = 1924125084243682322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (980847899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2709344 + ... + 2709705.

It is an arithmetic number, because the mean of its divisors is an integer number (246566775).

Almost surely, 2^980847869 is an apocalyptic number.

It is an amenable number.

980847869 is a deficient number, since it is larger than the sum of its proper divisors (5419231).

980847869 is a wasteful number, since it uses less digits than its factorization.

980847869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5419230.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The square root of 980847869 is about 31318.4908480597. The cubic root of 980847869 is about 993.5747610571.

The spelling of 980847869 in words is "nine hundred eighty million, eight hundred forty-seven thousand, eight hundred sixty-nine".