980792909 has 4 divisors (see below), whose sum is σ = 980949660. Its totient is φ = 980636160.

The previous prime is 980792903. The next prime is 980792941. The reversal of 980792909 is 909297089.

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 548028100 + 432764809 = 23410^2 + 20803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980792909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (980792903) 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, 68582 + ... + 81639.

It is an arithmetic number, because the mean of its divisors is an integer number (245237415).

Almost surely, 2^980792909 is an apocalyptic number.

It is an amenable number.

980792909 is a deficient number, since it is larger than the sum of its proper divisors (156751).

980792909 is a wasteful number, since it uses less digits than its factorization.

980792909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156750.

The product of its (nonzero) digits is 734832, while the sum is 53.

The square root of 980792909 is about 31317.6133988527. The cubic root of 980792909 is about 993.5562030011.

The spelling of 980792909 in words is "nine hundred eighty million, seven hundred ninety-two thousand, nine hundred nine".