39442 has 16 divisors (see below), whose sum is σ = 67032. Its totient is φ = 17280.

The previous prime is 39439. The next prime is 39443. The reversal of 39442 is 24493.

It can be written as a sum of positive squares in 4 ways, for example, as 25281 + 14161 = 159^2 + 119^2 .

It is a d-powerful number, because it can be written as 3⁸ + 9² + 4² + 4² + 2¹⁵ .

It is not an unprimeable number, because it can be changed into a prime (39443) 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, 942 + ... + 982.

2³⁹⁴⁴² is an apocalyptic number.

39442 is a deficient number, since it is larger than the sum of its proper divisors (27590).

39442 is a wasteful number, since it uses less digits than its factorization.

39442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93.

The product of its digits is 864, while the sum is 22.

The square root of 39442 is about 198.6001007049. The cubic root of 39442 is about 34.0397459066.

The spelling of 39442 in words is "thirty-nine thousand, four hundred forty-two".