39886672 has 40 divisors (see below), whose sum is σ = 88772096. Its totient is φ = 17006976.

The previous prime is 39886663. The next prime is 39886673. The reversal of 39886672 is 27668893.

It is a super-4 number, since 4×39886672⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39886673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24178 + ... + 25774.

Almost surely, 2^39886672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39886672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44386048).

39886672 is an abundant number, since it is smaller than the sum of its proper divisors (48885424).

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

39886672 is a wasteful number, since it uses less digits than its factorization.

39886672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1829 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 39886672 is about 6315.5896003461. The cubic root of 39886672 is about 341.6719035750.

The spelling of 39886672 in words is "thirty-nine million, eight hundred eighty-six thousand, six hundred seventy-two".