39806648 has 64 divisors (see below), whose sum is σ = 89041920. Its totient is φ = 16329600.

The previous prime is 39806633. The next prime is 39806677. The reversal of 39806648 is 84660893.

It is a junction number, because it is equal to n+sod(n) for n = 39806599 and 39806608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146753 + ... + 147023.

It is an arithmetic number, because the mean of its divisors is an integer number (1391280).

Almost surely, 2^39806648 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 39806648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44520960).

39806648 is an abundant number, since it is smaller than the sum of its proper divisors (49235272).

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

39806648 is a wasteful number, since it uses less digits than its factorization.

39806648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 39806648 is about 6309.2509856559. The cubic root of 39806648 is about 341.4432536134.

The spelling of 39806648 in words is "thirty-nine million, eight hundred six thousand, six hundred forty-eight".