39446442 has 48 divisors (see below), whose sum is σ = 99770112. Its totient is φ = 11028960.

The previous prime is 39446441. The next prime is 39446447. The reversal of 39446442 is 24464493.

39446442 is a `hidden beast` number, since 3 + 9 + 4 + 4 + 644 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 39446397 and 39446406.

It is not an unprimeable number, because it can be changed into a prime (39446441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2592 + ... + 9252.

It is an arithmetic number, because the mean of its divisors is an integer number (2078544).

Almost surely, 2^39446442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39446442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49885056).

39446442 is an abundant number, since it is smaller than the sum of its proper divisors (60323670).

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

39446442 is a wasteful number, since it uses less digits than its factorization.

39446442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6723 (or 6720 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 39446442 is about 6280.6402539868. The cubic root of 39446442 is about 340.4102372275.

Adding to 39446442 its product of digits (82944), we get a triangular number (39529386 = T₈₈₉₁).

The spelling of 39446442 in words is "thirty-nine million, four hundred forty-six thousand, four hundred forty-two".