389690256873 has 4 divisors (see below), whose sum is σ = 519587009168. Its totient is φ = 259793504580.

The previous prime is 389690256853. The next prime is 389690256883. The reversal of 389690256873 is 378652096983.

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 not a de Polignac number, because 389690256873 - 2⁵ = 389690256841 is a prime.

It is a super-3 number, since 3×389690256873³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389690256853) 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, 64948376143 + ... + 64948376148.

It is an arithmetic number, because the mean of its divisors is an integer number (129896752292).

Almost surely, 2^389690256873 is an apocalyptic number.

It is an amenable number.

389690256873 is a deficient number, since it is larger than the sum of its proper divisors (129896752295).

389690256873 is a wasteful number, since it uses less digits than its factorization.

389690256873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129896752294.

The product of its (nonzero) digits is 117573120, while the sum is 66.

The spelling of 389690256873 in words is "three hundred eighty-nine billion, six hundred ninety million, two hundred fifty-six thousand, eight hundred seventy-three".