897396729273 has 16 divisors (see below), whose sum is σ = 1450338148800. Its totient is φ = 543876805440.

The previous prime is 897396729269. The next prime is 897396729289. The reversal of 897396729273 is 372927693798.

897396729273 is a `hidden beast` number, since 89 + 7 + 396 + 7 + 2 + 92 + 73 = 666.

It is not a de Polignac number, because 897396729273 - 2² = 897396729269 is a prime.

It is not an unprimeable number, because it can be changed into a prime (897396729473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1510768608 + ... + 1510769201.

It is an arithmetic number, because the mean of its divisors is an integer number (90646134300).

Almost surely, 2^897396729273 is an apocalyptic number.

It is an amenable number.

897396729273 is a deficient number, since it is larger than the sum of its proper divisors (552941419527).

897396729273 is a wasteful number, since it uses less digits than its factorization.

897396729273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3021537829 (or 3021537823 counting only the distinct ones).

The product of its digits is 432081216, while the sum is 72.

The spelling of 897396729273 in words is "eight hundred ninety-seven billion, three hundred ninety-six million, seven hundred twenty-nine thousand, two hundred seventy-three".