39949608240 has 560 divisors, whose sum is σ = 151448878080. Its totient is φ = 9758568960.

The previous prime is 39949608227. The next prime is 39949608289. The reversal of 39949608240 is 4280694993.

39949608240 is a `hidden beast` number, since 3 + 9 + 9 + 4 + 9 + 608 + 24 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 34349899 + ... + 34351061.

Almost surely, 2^39949608240 is an apocalyptic number.

39949608240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39949608240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75724439040).

39949608240 is an abundant number, since it is smaller than the sum of its proper divisors (111499269840).

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

39949608240 is a wasteful number, since it uses less digits than its factorization.

39949608240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 39949608240 in words is "thirty-nine billion, nine hundred forty-nine million, six hundred eight thousand, two hundred forty".