897917453 has 2 divisors, whose sum is σ = 897917454. Its totient is φ = 897917452.

The previous prime is 897917431. The next prime is 897917491. The reversal of 897917453 is 354719798.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475327204 + 422590249 = 21802^2 + 20557^2 .

It is a cyclic number.

It is not a de Polignac number, because 897917453 - 2⁶ = 897917389 is a prime.

It is a super-3 number, since 3×897917453³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 897917395 and 897917404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897917413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448958726 + 448958727.

It is an arithmetic number, because the mean of its divisors is an integer number (448958727).

Almost surely, 2^897917453 is an apocalyptic number.

It is an amenable number.

897917453 is a deficient number, since it is larger than the sum of its proper divisors (1).

897917453 is an equidigital number, since it uses as much as digits as its factorization.

897917453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The square root of 897917453 is about 29965.2707813562. The cubic root of 897917453 is about 964.7441142794.

The spelling of 897917453 in words is "eight hundred ninety-seven million, nine hundred seventeen thousand, four hundred fifty-three".