980547409 has 4 divisors (see below), whose sum is σ = 985964980. Its totient is φ = 975129840.

The previous prime is 980547319. The next prime is 980547413. The reversal of 980547409 is 904745089.

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 121881600 + 858665809 = 11040^2 + 29303^2 .

It is a cyclic number.

It is not a de Polignac number, because 980547409 - 2²³ = 972158801 is a prime.

It is a super-3 number, since 3×980547409³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980547439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2708514 + ... + 2708875.

It is an arithmetic number, because the mean of its divisors is an integer number (246491245).

Almost surely, 2^980547409 is an apocalyptic number.

It is an amenable number.

980547409 is a deficient number, since it is larger than the sum of its proper divisors (5417571).

980547409 is a wasteful number, since it uses less digits than its factorization.

980547409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417570.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 980547409 is about 31313.6936339359. The cubic root of 980547409 is about 993.4732978333.

The spelling of 980547409 in words is "nine hundred eighty million, five hundred forty-seven thousand, four hundred nine".