39886225920 has 240 divisors, whose sum is σ = 138611753280. Its totient is φ = 10599800832.

The previous prime is 39886225891. The next prime is 39886225921. The reversal of 39886225920 is 2952268893.

39886225920 is a `hidden beast` number, since 3 + 9 + 8 + 8 + 622 + 5 + 9 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×39886225920² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39886225921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7070461 + ... + 7076099.

It is an arithmetic number, because the mean of its divisors is an integer number (577548972).

Almost surely, 2^39886225920 is an apocalyptic number.

39886225920 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 39886225920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69305876640).

39886225920 is an abundant number, since it is smaller than the sum of its proper divisors (98725527360).

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

39886225920 is a wasteful number, since it uses less digits than its factorization.

39886225920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5975 (or 5956 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 39886225920 in words is "thirty-nine billion, eight hundred eighty-six million, two hundred twenty-five thousand, nine hundred twenty".