39822642 has 24 divisors (see below), whose sum is σ = 86668140. Its totient is φ = 13214880.

The previous prime is 39822611. The next prime is 39822649. The reversal of 39822642 is 24622893.

39822642 is a `hidden beast` number, since 3 + 9 + 8 + 2 + 2 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39200121 + 622521 = 6261^2 + 789^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39822597 and 39822606.

It is not an unprimeable number, because it can be changed into a prime (39822649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 709 + ... + 8952.

Almost surely, 2^39822642 is an apocalyptic number.

39822642 is an abundant number, since it is smaller than the sum of its proper divisors (46845498).

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

39822642 is a wasteful number, since it uses less digits than its factorization.

39822642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9898 (or 9895 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 39822642 is about 6310.5183622267. The cubic root of 39822642 is about 341.4889772335.

The spelling of 39822642 in words is "thirty-nine million, eight hundred twenty-two thousand, six hundred forty-two".