8638445 has 8 divisors (see below), whose sum is σ = 10911840. Its totient is φ = 6546960.

The previous prime is 8638411. The next prime is 8638447. The reversal of 8638445 is 5448368.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8638445 - 2⁶ = 8638381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8638399 and 8638408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8638447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45371 + ... + 45560.

It is an arithmetic number, because the mean of its divisors is an integer number (1363980).

Almost surely, 2^8638445 is an apocalyptic number.

It is an amenable number.

8638445 is a deficient number, since it is larger than the sum of its proper divisors (2273395).

8638445 is a wasteful number, since it uses less digits than its factorization.

8638445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90955.

The product of its digits is 92160, while the sum is 38.

The square root of 8638445 is about 2939.1231685658. The cubic root of 8638445 is about 205.1848026191.

The spelling of 8638445 in words is "eight million, six hundred thirty-eight thousand, four hundred forty-five".