39442474 has 4 divisors (see below), whose sum is σ = 59163714. Its totient is φ = 19721236.

The previous prime is 39442463. The next prime is 39442477. The reversal of 39442474 is 47424493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47424493 = 167 ⋅283979.

It can be written as a sum of positive squares in only one way, i.e., 34633225 + 4809249 = 5885^2 + 2193^2 .

It is not an unprimeable number, because it can be changed into a prime (39442477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9860617 + ... + 9860620.

Almost surely, 2^39442474 is an apocalyptic number.

39442474 is a deficient number, since it is larger than the sum of its proper divisors (19721240).

39442474 is a wasteful number, since it uses less digits than its factorization.

39442474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19721239.

The product of its digits is 96768, while the sum is 37.

The square root of 39442474 is about 6280.3243546811. The cubic root of 39442474 is about 340.3988226524.

The spelling of 39442474 in words is "thirty-nine million, four hundred forty-two thousand, four hundred seventy-four".