39800064 has 72 divisors (see below), whose sum is σ = 109640160. Its totient is φ = 12802048.

The previous prime is 39800039. The next prime is 39800081. The reversal of 39800064 is 46000893.

It is a super-4 number, since 4×39800064⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

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, 21379 + ... + 23165.

It is an arithmetic number, because the mean of its divisors is an integer number (1522780).

Almost surely, 2^39800064 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 39800064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54820080).

39800064 is an abundant number, since it is smaller than the sum of its proper divisors (69840096).

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

39800064 is a wasteful number, since it uses less digits than its factorization.

39800064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1821 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 39800064 is about 6308.7291905740. The cubic root of 39800064 is about 341.4244277267.

The spelling of 39800064 in words is "thirty-nine million, eight hundred thousand, sixty-four".