8442907 has 4 divisors (see below), whose sum is σ = 9210456. Its totient is φ = 7675360.

The previous prime is 8442901. The next prime is 8442923. The reversal of 8442907 is 7092448.

It is a happy number.

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

It is not a de Polignac number, because 8442907 - 2⁷ = 8442779 is a prime.

It is a super-2 number, since 2×8442907² = 142565357221298, which contains 22 as substring.

It is a Duffinian number.

8442907 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8442901) 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, 383758 + ... + 383779.

It is an arithmetic number, because the mean of its divisors is an integer number (2302614).

Almost surely, 2^8442907 is an apocalyptic number.

8442907 is a deficient number, since it is larger than the sum of its proper divisors (767549).

8442907 is a wasteful number, since it uses less digits than its factorization.

8442907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767548.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 8442907 is about 2905.6680815262. The cubic root of 8442907 is about 203.6247989396.

The spelling of 8442907 in words is "eight million, four hundred forty-two thousand, nine hundred seven".