39123940000 has 120 divisors (see below), whose sum is σ = 96662048868. Its totient is φ = 15582720000.

The previous prime is 39123939977. The next prime is 39123940007. The reversal of 39123940000 is 4932193.

It can be written as a sum of positive squares in 10 ways, for example, as 281836944 + 38842103056 = 16788^2 + 197084^2 .

It is a super-2 number, since 2×39123940000² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (39123940007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4815942 + ... + 4824058.

Almost surely, 2^39123940000 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 39123940000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48331024434).

39123940000 is an abundant number, since it is smaller than the sum of its proper divisors (57538108868).

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

39123940000 is an equidigital number, since it uses as much as digits as its factorization.

39123940000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8388 (or 8365 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 39123940000 in words is "thirty-nine billion, one hundred twenty-three million, nine hundred forty thousand".