976841221 has 2 divisors, whose sum is σ = 976841222. Its totient is φ = 976841220.

The previous prime is 976841219. The next prime is 976841227. The reversal of 976841221 is 122148679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 953944996 + 22896225 = 30886^2 + 4785^2 .

It is a cyclic number.

It is not a de Polignac number, because 976841221 - 2¹ = 976841219 is a prime.

Together with 976841219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (976841227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488420610 + 488420611.

It is an arithmetic number, because the mean of its divisors is an integer number (488420611).

Almost surely, 2^976841221 is an apocalyptic number.

It is an amenable number.

976841221 is a deficient number, since it is larger than the sum of its proper divisors (1).

976841221 is an equidigital number, since it uses as much as digits as its factorization.

976841221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 976841221 is about 31254.4592178460. The cubic root of 976841221 is about 992.2200361303.

The spelling of 976841221 in words is "nine hundred seventy-six million, eight hundred forty-one thousand, two hundred twenty-one".