977830213 has 2 divisors, whose sum is σ = 977830214. Its totient is φ = 977830212.

The previous prime is 977830153. The next prime is 977830283. The reversal of 977830213 is 312038779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 746273124 + 231557089 = 27318^2 + 15217^2 .

It is a cyclic number.

It is not a de Polignac number, because 977830213 - 2¹⁷ = 977699141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977830283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488915106 + 488915107.

It is an arithmetic number, because the mean of its divisors is an integer number (488915107).

Almost surely, 2^977830213 is an apocalyptic number.

It is an amenable number.

977830213 is a deficient number, since it is larger than the sum of its proper divisors (1).

977830213 is an equidigital number, since it uses as much as digits as its factorization.

977830213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 977830213 is about 31270.2768296029. The cubic root of 977830213 is about 992.5547772240.

The spelling of 977830213 in words is "nine hundred seventy-seven million, eight hundred thirty thousand, two hundred thirteen".