897209219 has 2 divisors, whose sum is σ = 897209220. Its totient is φ = 897209218.

The previous prime is 897209197. The next prime is 897209227. The reversal of 897209219 is 912902798.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 897209219 - 2¹⁶ = 897143683 is a prime.

It is a super-2 number, since 2×897209219² = 1609968765317179922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (897209239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448604609 + 448604610.

It is an arithmetic number, because the mean of its divisors is an integer number (448604610).

Almost surely, 2^897209219 is an apocalyptic number.

897209219 is a deficient number, since it is larger than the sum of its proper divisors (1).

897209219 is an equidigital number, since it uses as much as digits as its factorization.

897209219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 897209219 is about 29953.4508696410. The cubic root of 897209219 is about 964.4903996788.

The spelling of 897209219 in words is "eight hundred ninety-seven million, two hundred nine thousand, two hundred nineteen".