908389 has 4 divisors (see below), whose sum is σ = 911020. Its totient is φ = 905760.

The previous prime is 908381. The next prime is 908417. The reversal of 908389 is 983809.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 736164 + 172225 = 858^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 908389 - 2³ = 908381 is a prime.

It is a Duffinian number.

908389 is a lucky number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (908381) 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, 702 + ... + 1519.

It is an arithmetic number, because the mean of its divisors is an integer number (227755).

2⁹⁰⁸³⁸⁹ is an apocalyptic number.

It is an amenable number.

908389 is a deficient number, since it is larger than the sum of its proper divisors (2631).

908389 is a wasteful number, since it uses less digits than its factorization.

908389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 908389 is about 953.0944339361. The cubic root of 908389 is about 96.8479923325.

The spelling of 908389 in words is "nine hundred eight thousand, three hundred eighty-nine".