39497786320 has 40 divisors (see below), whose sum is σ = 91842057000. Its totient is φ = 15797445120.

The previous prime is 39497786297. The next prime is 39497786323. The reversal of 39497786320 is 2368779493.

It can be written as a sum of positive squares in 4 ways, for example, as 18896351296 + 20601435024 = 137464^2 + 143532^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39497786323) 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 7 ways as a sum of consecutive naturals, for example, 973806 + ... + 1013554.

It is an arithmetic number, because the mean of its divisors is an integer number (2296051425).

Almost surely, 2^39497786320 is an apocalyptic number.

It is an amenable number.

39497786320 is an abundant number, since it is smaller than the sum of its proper divisors (52344270680).

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

39497786320 is a wasteful number, since it uses less digits than its factorization.

39497786320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52183 (or 52177 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 58.

The spelling of 39497786320 in words is "thirty-nine billion, four hundred ninety-seven million, seven hundred eighty-six thousand, three hundred twenty".