897892709 has 16 divisors (see below), whose sum is σ = 1102224000. Its totient is φ = 729110592.

The previous prime is 897892691. The next prime is 897892759. The reversal of 897892709 is 907298798.

It is a de Polignac number, because none of the positive numbers 2^k-897892709 is a prime.

It is a super-2 number, since 2×897892709² = 1612422633750717362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897892759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62372 + ... + 75405.

It is an arithmetic number, because the mean of its divisors is an integer number (68889000).

Almost surely, 2^897892709 is an apocalyptic number.

It is an amenable number.

897892709 is a deficient number, since it is larger than the sum of its proper divisors (204331291).

897892709 is a wasteful number, since it uses less digits than its factorization.

897892709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137817 (or 137803 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 59.

The square root of 897892709 is about 29964.8579005474. The cubic root of 897892709 is about 964.7352523483.

The spelling of 897892709 in words is "eight hundred ninety-seven million, eight hundred ninety-two thousand, seven hundred nine".