39964340 has 96 divisors (see below), whose sum is σ = 97203456. Its totient is φ = 13685760.

The previous prime is 39964303. The next prime is 39964343. The reversal of 39964340 is 4346993.

39964340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 39964294 and 39964303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39964343) 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 31 ways as a sum of consecutive naturals, for example, 245099 + ... + 245261.

It is an arithmetic number, because the mean of its divisors is an integer number (1012536).

Almost surely, 2^39964340 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 39964340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48601728).

39964340 is an abundant number, since it is smaller than the sum of its proper divisors (57239116).

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

39964340 is a wasteful number, since it uses less digits than its factorization.

39964340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 39964340 is about 6321.7355211999. The cubic root of 39964340 is about 341.8935295490.

It can be divided in two parts, 39964 and 340, that added together give a palindrome (40304).

The spelling of 39964340 in words is "thirty-nine million, nine hundred sixty-four thousand, three hundred forty".