389404761281 has 8 divisors (see below), whose sum is σ = 403993422720. Its totient is φ = 374893493968.

The previous prime is 389404761269. The next prime is 389404761311. The reversal of 389404761281 is 182167404983.

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 389404761281 - 2¹⁸ = 389404499137 is a prime.

It is a super-2 number, since 2×389404761281² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (389404761211) 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, 19338281 + ... + 19358406.

It is an arithmetic number, because the mean of its divisors is an integer number (50499177840).

Almost surely, 2^389404761281 is an apocalyptic number.

It is an amenable number.

389404761281 is a deficient number, since it is larger than the sum of its proper divisors (14588661439).

389404761281 is a wasteful number, since it uses less digits than its factorization.

389404761281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38697063.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 389404761281 in words is "three hundred eighty-nine billion, four hundred four million, seven hundred sixty-one thousand, two hundred eighty-one".