39964225440 has 96 divisors (see below), whose sum is σ = 125949660480. Its totient is φ = 10651848704.

The previous prime is 39964225397. The next prime is 39964225517. The reversal of 39964225440 is 4452246993.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 39964225440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002367 + ... + 1041473.

It is an arithmetic number, because the mean of its divisors is an integer number (1311975630).

Almost surely, 2^39964225440 is an apocalyptic number.

39964225440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39964225440 is an abundant number, since it is smaller than the sum of its proper divisors (85985435040).

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

39964225440 is a wasteful number, since it uses less digits than its factorization.

39964225440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41254 (or 41246 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 39964225440 in words is "thirty-nine billion, nine hundred sixty-four million, two hundred twenty-five thousand, four hundred forty".