8438455 has 8 divisors (see below), whose sum is σ = 10143504. Its totient is φ = 6739200.

The previous prime is 8438429. The next prime is 8438459. The reversal of 8438455 is 5548348.

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 8438455 - 2⁷ = 8438327 is a prime.

It is a Duffinian number.

8438455 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8438459) 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, 3015 + ... + 5095.

It is an arithmetic number, because the mean of its divisors is an integer number (1267938).

Almost surely, 2^8438455 is an apocalyptic number.

8438455 is a deficient number, since it is larger than the sum of its proper divisors (1705049).

8438455 is a wasteful number, since it uses less digits than its factorization.

8438455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897.

The product of its digits is 76800, while the sum is 37.

The square root of 8438455 is about 2904.9018916308. The cubic root of 8438455 is about 203.5890017514.

The spelling of 8438455 in words is "eight million, four hundred thirty-eight thousand, four hundred fifty-five".