80389 has 4 divisors (see below), whose sum is σ = 84640. Its totient is φ = 76140.

The previous prime is 80387. The next prime is 80407. The reversal of 80389 is 98308.

80389 = T₂₂ + T₂₃ + ... + T₇₈.

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 80389 - 2¹ = 80387 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2097 + ... + 2134.

It is an arithmetic number, because the mean of its divisors is an integer number (21160).

2⁸⁰³⁸⁹ is an apocalyptic number.

80389 is the 232-nd centered triangular number.

It is an amenable number.

80389 is a deficient number, since it is larger than the sum of its proper divisors (4251).

80389 is a wasteful number, since it uses less digits than its factorization.

80389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 80389 is about 283.5295399072. The cubic root of 80389 is about 43.1584204983.

The spelling of 80389 in words is "eighty thousand, three hundred eighty-nine".