979691227 has 2 divisors, whose sum is σ = 979691228. Its totient is φ = 979691226.

The previous prime is 979691221. The next prime is 979691239. The reversal of 979691227 is 722196979.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 979691227 - 2¹⁹ = 979166939 is a prime.

It is a super-4 number, since 4×979691227⁴ (a number of 37 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (979691221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489845613 + 489845614.

It is an arithmetic number, because the mean of its divisors is an integer number (489845614).

Almost surely, 2^979691227 is an apocalyptic number.

979691227 is a deficient number, since it is larger than the sum of its proper divisors (1).

979691227 is an equidigital number, since it uses as much as digits as its factorization.

979691227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 52.

The square root of 979691227 is about 31300.0196006328. The cubic root of 979691227 is about 993.1840574771.

The spelling of 979691227 in words is "nine hundred seventy-nine million, six hundred ninety-one thousand, two hundred twenty-seven".