8450389 has 4 divisors (see below), whose sum is σ = 8456256. Its totient is φ = 8444524.

The previous prime is 8450381. The next prime is 8450399. The reversal of 8450389 is 9830548.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8450389 - 2³ = 8450381 is a prime.

It is a Duffinian number.

8450389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8450381) 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, 882 + ... + 4204.

It is an arithmetic number, because the mean of its divisors is an integer number (2114064).

Almost surely, 2^8450389 is an apocalyptic number.

It is an amenable number.

8450389 is a deficient number, since it is larger than the sum of its proper divisors (5867).

8450389 is a wasteful number, since it uses less digits than its factorization.

8450389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5866.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 8450389 is about 2906.9552800138. The cubic root of 8450389 is about 203.6849311083.

The spelling of 8450389 in words is "eight million, four hundred fifty thousand, three hundred eighty-nine".