97784413 has 2 divisors, whose sum is σ = 97784414. Its totient is φ = 97784412.

The previous prime is 97784381. The next prime is 97784419. The reversal of 97784413 is 31448779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76003524 + 21780889 = 8718^2 + 4667^2 .

It is a cyclic number.

It is not a de Polignac number, because 97784413 - 2⁵ = 97784381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97784413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97784419) 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, 48892206 + 48892207.

It is an arithmetic number, because the mean of its divisors is an integer number (48892207).

Almost surely, 2^97784413 is an apocalyptic number.

It is an amenable number.

97784413 is a deficient number, since it is larger than the sum of its proper divisors (1).

97784413 is an equidigital number, since it uses as much as digits as its factorization.

97784413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 97784413 is about 9888.6001537124. The cubic root of 97784413 is about 460.7053027182.

The spelling of 97784413 in words is "ninety-seven million, seven hundred eighty-four thousand, four hundred thirteen".