8442438 has 32 divisors (see below), whose sum is σ = 18369504. Its totient is φ = 2575872.

The previous prime is 8442437. The next prime is 8442439. The reversal of 8442438 is 8342448.

It is an interprime number because it is at equal distance from previous prime (8442437) and next prime (8442439).

It is a junction number, because it is equal to n+sod(n) for n = 8442399 and 8442408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2656 + ... + 4892.

It is an arithmetic number, because the mean of its divisors is an integer number (574047).

Almost surely, 2^8442438 is an apocalyptic number.

8442438 is an abundant number, since it is smaller than the sum of its proper divisors (9927066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8442438 is a wasteful number, since it uses less digits than its factorization.

8442438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296.

The product of its digits is 24576, while the sum is 33.

The square root of 8442438 is about 2905.5873760739. The cubic root of 8442438 is about 203.6210284452.

The spelling of 8442438 in words is "eight million, four hundred forty-two thousand, four hundred thirty-eight".