889156572397 has 4 divisors (see below), whose sum is σ = 889905652416. Its totient is φ = 888407492380.

The previous prime is 889156572349. The next prime is 889156572503. The reversal of 889156572397 is 793275651988.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 889156572397 - 2¹¹ = 889156570349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889156579397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374538229 + ... + 374540602.

It is an arithmetic number, because the mean of its divisors is an integer number (222476413104).

Almost surely, 2^889156572397 is an apocalyptic number.

It is an amenable number.

889156572397 is a deficient number, since it is larger than the sum of its proper divisors (749080019).

889156572397 is a wasteful number, since it uses less digits than its factorization.

889156572397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749080018.

The product of its digits is 228614400, while the sum is 70.

The spelling of 889156572397 in words is "eight hundred eighty-nine billion, one hundred fifty-six million, five hundred seventy-two thousand, three hundred ninety-seven".