39879216 has 140 divisors (see below), whose sum is σ = 125231568. Its totient is φ = 12223872.

The previous prime is 39879197. The next prime is 39879223. The reversal of 39879216 is 61297893.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 151501 + ... + 151763.

Almost surely, 2^39879216 is an apocalyptic number.

39879216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39879216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62615784).

39879216 is an abundant number, since it is smaller than the sum of its proper divisors (85352352).

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

39879216 is a wasteful number, since it uses less digits than its factorization.

39879216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 281 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 39879216 is about 6314.9992874109. Note that the first 3 decimals coincide. The cubic root of 39879216 is about 341.6506127165.

It can be divided in two parts, 3987 and 9216, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 39879216 in words is "thirty-nine million, eight hundred seventy-nine thousand, two hundred sixteen".