978298291 has 8 divisors (see below), whose sum is σ = 988555104. Its totient is φ = 968069760.

The previous prime is 978298273. The next prime is 978298301. The reversal of 978298291 is 192892879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 978298291 - 2⁵ = 978298259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978298271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66421 + ... + 79801.

It is an arithmetic number, because the mean of its divisors is an integer number (123569388).

Almost surely, 2^978298291 is an apocalyptic number.

978298291 is a deficient number, since it is larger than the sum of its proper divisors (10256813).

978298291 is a wasteful number, since it uses less digits than its factorization.

978298291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14141.

The product of its digits is 1306368, while the sum is 55.

The square root of 978298291 is about 31277.7603258290. The cubic root of 978298291 is about 992.7131274627.

The spelling of 978298291 in words is "nine hundred seventy-eight million, two hundred ninety-eight thousand, two hundred ninety-one".