39393902240 has 288 divisors, whose sum is σ = 120696210432. Its totient is φ = 11881267200.

The previous prime is 39393902231. The next prime is 39393902279. The reversal of 39393902240 is 4220939393.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 39393902191 and 39393902200.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4196432 + ... + 4205808.

It is an arithmetic number, because the mean of its divisors is an integer number (419084064).

Almost surely, 2^39393902240 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 39393902240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60348105216).

39393902240 is an abundant number, since it is smaller than the sum of its proper divisors (81302308192).

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

39393902240 is a wasteful number, since it uses less digits than its factorization.

39393902240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9452 (or 9433 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 44.

The spelling of 39393902240 in words is "thirty-nine billion, three hundred ninety-three million, nine hundred two thousand, two hundred forty".