897872239 has 8 divisors (see below), whose sum is σ = 982650240. Its totient is φ = 813619800.

The previous prime is 897872233. The next prime is 897872291. The reversal of 897872239 is 932278798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 897872239 - 2¹⁷ = 897741167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 897872239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897872233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127809 + ... + 134650.

It is an arithmetic number, because the mean of its divisors is an integer number (122831280).

Almost surely, 2^897872239 is an apocalyptic number.

897872239 is a deficient number, since it is larger than the sum of its proper divisors (84778001).

897872239 is a wasteful number, since it uses less digits than its factorization.

897872239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262781.

The product of its digits is 3048192, while the sum is 55.

The square root of 897872239 is about 29964.5163318215. The cubic root of 897872239 is about 964.7279210044.

The spelling of 897872239 in words is "eight hundred ninety-seven million, eight hundred seventy-two thousand, two hundred thirty-nine".