893043404340397 has 4 divisors (see below), whose sum is σ = 893044372758496. Its totient is φ = 893042435922300.

The previous prime is 893043404340371. The next prime is 893043404340413. The reversal of 893043404340397 is 793043404340398.

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 a de Polignac number, because none of the positive numbers 2^k-893043404340397 is a prime.

It is a super-2 number, since 2×893043404340397² (a number of 31 digits) 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 (893043404346397) 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, 482824479 + ... + 484670572.

It is an arithmetic number, because the mean of its divisors is an integer number (223261093189624).

Almost surely, 2^{893043404340397} is an apocalyptic number.

It is an amenable number.

893043404340397 is a deficient number, since it is larger than the sum of its proper divisors (968418099).

893043404340397 is an equidigital number, since it uses as much as digits as its factorization.

893043404340397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968418098.

The product of its (nonzero) digits is 94058496, while the sum is 61.

Subtracting from 893043404340397 its reverse (793043404340398), we obtain a palindrome (99999999999999).

The spelling of 893043404340397 in words is "eight hundred ninety-three trillion, forty-three billion, four hundred four million, three hundred forty thousand, three hundred ninety-seven".