97884791 has 2 divisors, whose sum is σ = 97884792. Its totient is φ = 97884790.

The previous prime is 97884739. The next prime is 97884797. The reversal of 97884791 is 19748879.

It is a strong prime.

It is an emirp because it is prime and its reverse (19748879) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97884791 is a prime.

It is a super-2 number, since 2×97884791² = 19162864618227362, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97884797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48942395 + 48942396.

It is an arithmetic number, because the mean of its divisors is an integer number (48942396).

Almost surely, 2^97884791 is an apocalyptic number.

97884791 is a deficient number, since it is larger than the sum of its proper divisors (1).

97884791 is an equidigital number, since it uses as much as digits as its factorization.

97884791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 53.

The square root of 97884791 is about 9893.6742921930. The cubic root of 97884791 is about 460.8628904179.

The spelling of 97884791 in words is "ninety-seven million, eight hundred eighty-four thousand, seven hundred ninety-one".