979764217 has 8 divisors (see below), whose sum is σ = 1014805440. Its totient is φ = 944806800.

The previous prime is 979764211. The next prime is 979764239. The reversal of 979764217 is 712467979.

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 979764217 - 2²³ = 971375609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979764211) 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, 3342 + ... + 44392.

It is an arithmetic number, because the mean of its divisors is an integer number (126850680).

Almost surely, 2^979764217 is an apocalyptic number.

It is an amenable number.

979764217 is a deficient number, since it is larger than the sum of its proper divisors (35041223).

979764217 is a wasteful number, since it uses less digits than its factorization.

979764217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41903.

The product of its digits is 1333584, while the sum is 52.

The square root of 979764217 is about 31301.1855526272. The cubic root of 979764217 is about 993.2087219503.

The spelling of 979764217 in words is "nine hundred seventy-nine million, seven hundred sixty-four thousand, two hundred seventeen".