8438642 has 8 divisors (see below), whose sum is σ = 12758016. Its totient is φ = 4185972.

The previous prime is 8438629. The next prime is 8438653. The reversal of 8438642 is 2468348.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16358 + ... + 16865.

It is an arithmetic number, because the mean of its divisors is an integer number (1594752).

Almost surely, 2^8438642 is an apocalyptic number.

8438642 is a deficient number, since it is larger than the sum of its proper divisors (4319374).

8438642 is a wasteful number, since it uses less digits than its factorization.

8438642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33352.

The product of its digits is 36864, while the sum is 35.

The square root of 8438642 is about 2904.9340784259. The cubic root of 8438642 is about 203.5905056152.

The spelling of 8438642 in words is "eight million, four hundred thirty-eight thousand, six hundred forty-two".