39897867800 has 288 divisors, whose sum is σ = 115898519520. Its totient is φ = 12689510400.

The previous prime is 39897867799. The next prime is 39897867803. The reversal of 39897867800 is 876879893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39897867803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11826914 + ... + 11830286.

It is an arithmetic number, because the mean of its divisors is an integer number (402425415).

Almost surely, 2^39897867800 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 39897867800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57949259760).

39897867800 is an abundant number, since it is smaller than the sum of its proper divisors (76000651720).

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

39897867800 is a wasteful number, since it uses less digits than its factorization.

39897867800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491 (or 3475 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 39897867800 in words is "thirty-nine billion, eight hundred ninety-seven million, eight hundred sixty-seven thousand, eight hundred".