97785929 has 2 divisors, whose sum is σ = 97785930. Its totient is φ = 97785928.

The previous prime is 97785923. The next prime is 97785953. The reversal of 97785929 is 92958779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83685904 + 14100025 = 9148^2 + 3755^2 .

It is a cyclic number.

It is not a de Polignac number, because 97785929 - 2¹² = 97781833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97785923) 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, 48892964 + 48892965.

It is an arithmetic number, because the mean of its divisors is an integer number (48892965).

Almost surely, 2^97785929 is an apocalyptic number.

It is an amenable number.

97785929 is a deficient number, since it is larger than the sum of its proper divisors (1).

97785929 is an equidigital number, since it uses as much as digits as its factorization.

97785929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 56.

The square root of 97785929 is about 9888.6768073388. The cubic root of 97785929 is about 460.7076835531.

The spelling of 97785929 in words is "ninety-seven million, seven hundred eighty-five thousand, nine hundred twenty-nine".