97970219 has 2 divisors, whose sum is σ = 97970220. Its totient is φ = 97970218.

The previous prime is 97970177. The next prime is 97970227. The reversal of 97970219 is 91207979.

It is a strong prime.

It is an emirp because it is prime and its reverse (91207979) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97970219 is a prime.

It is a super-2 number, since 2×97970219² = 19196327621815922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97970219.

It is not a weakly prime, because it can be changed into another prime (97972219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48985109 + 48985110.

It is an arithmetic number, because the mean of its divisors is an integer number (48985110).

Almost surely, 2^97970219 is an apocalyptic number.

97970219 is a deficient number, since it is larger than the sum of its proper divisors (1).

97970219 is an equidigital number, since it uses as much as digits as its factorization.

97970219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 97970219 is about 9897.9906546733. The cubic root of 97970219 is about 460.9969226365.

It can be divided in two parts, 97970 and 219, that added together give a palindrome (98189).

The spelling of 97970219 in words is "ninety-seven million, nine hundred seventy thousand, two hundred nineteen".