389636077 has 4 divisors (see below), whose sum is σ = 406576800. Its totient is φ = 372695356.

The previous prime is 389636069. The next prime is 389636101. The reversal of 389636077 is 770636983.

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 389636077 - 2³ = 389636069 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389636077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389636017) 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, 8470327 + ... + 8470372.

It is an arithmetic number, because the mean of its divisors is an integer number (101644200).

Almost surely, 2^389636077 is an apocalyptic number.

It is an amenable number.

389636077 is a deficient number, since it is larger than the sum of its proper divisors (16940723).

389636077 is a wasteful number, since it uses less digits than its factorization.

389636077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16940722.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The square root of 389636077 is about 19739.2015289373. The cubic root of 389636077 is about 730.3870325219.

The spelling of 389636077 in words is "three hundred eighty-nine million, six hundred thirty-six thousand, seventy-seven".