980916091 has 4 divisors (see below), whose sum is σ = 981078784. Its totient is φ = 980753400.

The previous prime is 980916077. The next prime is 980916109. The reversal of 980916091 is 190619089.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190619089 = 9721 ⋅19609.

It is a cyclic number.

It is not a de Polignac number, because 980916091 - 2¹⁷ = 980785019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980916491) 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, 71940 + ... + 84481.

It is an arithmetic number, because the mean of its divisors is an integer number (245269696).

Almost surely, 2^980916091 is an apocalyptic number.

980916091 is a deficient number, since it is larger than the sum of its proper divisors (162693).

980916091 is a wasteful number, since it uses less digits than its factorization.

980916091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162692.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 980916091 is about 31319.5799939910. The cubic root of 980916091 is about 993.5977962589.

The spelling of 980916091 in words is "nine hundred eighty million, nine hundred sixteen thousand, ninety-one".