389081629 has 4 divisors (see below), whose sum is σ = 389121084. Its totient is φ = 389042176.

The previous prime is 389081621. The next prime is 389081653. The reversal of 389081629 is 926180983.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 327537604 + 61544025 = 18098^2 + 7845^2 .

It is a cyclic number.

It is not a de Polignac number, because 389081629 - 2³ = 389081621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389081621) 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, 9459 + ... + 29455.

It is an arithmetic number, because the mean of its divisors is an integer number (97280271).

Almost surely, 2^389081629 is an apocalyptic number.

It is an amenable number.

389081629 is a deficient number, since it is larger than the sum of its proper divisors (39455).

389081629 is a wasteful number, since it uses less digits than its factorization.

389081629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39454.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 389081629 is about 19725.1521920618. The cubic root of 389081629 is about 730.0404237326.

The spelling of 389081629 in words is "three hundred eighty-nine million, eighty-one thousand, six hundred twenty-nine".