389097455521 has 4 divisors (see below), whose sum is σ = 389104826544. Its totient is φ = 389090084500.

The previous prime is 389097455501. The next prime is 389097455561. The reversal of 389097455521 is 125554790983.

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 389097455521 - 2⁷ = 389097455393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389097455501) 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, 3605755 + ... + 3712096.

It is an arithmetic number, because the mean of its divisors is an integer number (97276206636).

Almost surely, 2^389097455521 is an apocalyptic number.

It is an amenable number.

389097455521 is a deficient number, since it is larger than the sum of its proper divisors (7371023).

389097455521 is an equidigital number, since it uses as much as digits as its factorization.

389097455521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7371022.

The product of its (nonzero) digits is 13608000, while the sum is 58.

The spelling of 389097455521 in words is "three hundred eighty-nine billion, ninety-seven million, four hundred fifty-five thousand, five hundred twenty-one".