97879129 has 2 divisors, whose sum is σ = 97879130. Its totient is φ = 97879128.

The previous prime is 97879091. The next prime is 97879141. The reversal of 97879129 is 92197879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89813529 + 8065600 = 9477^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 97879129 - 2¹¹ = 97877081 is a prime.

It is not a weakly prime, because it can be changed into another prime (97879729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48939564 + 48939565.

It is an arithmetic number, because the mean of its divisors is an integer number (48939565).

Almost surely, 2^97879129 is an apocalyptic number.

It is an amenable number.

97879129 is a deficient number, since it is larger than the sum of its proper divisors (1).

97879129 is an equidigital number, since it uses as much as digits as its factorization.

97879129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 52.

The square root of 97879129 is about 9893.3881456253. The cubic root of 97879129 is about 460.8540042707.

The spelling of 97879129 in words is "ninety-seven million, eight hundred seventy-nine thousand, one hundred twenty-nine".