40399924608 has 128 divisors (see below), whose sum is σ = 121773312000. Its totient is φ = 13180064256.

The previous prime is 40399924597. The next prime is 40399924673. The reversal of 40399924608 is 80642999304.

40399924608 is a `hidden beast` number, since 4 + 0 + 3 + 9 + 9 + 9 + 24 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38073 + ... + 286791.

It is an arithmetic number, because the mean of its divisors is an integer number (951354000).

Almost surely, 2^40399924608 is an apocalyptic number.

40399924608 is a gapful number since it is divisible by the number (48) 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 40399924608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60886656000).

40399924608 is an abundant number, since it is smaller than the sum of its proper divisors (81373387392).

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

40399924608 is a wasteful number, since it uses less digits than its factorization.

40399924608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248789 (or 248771 counting only the distinct ones).

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

The spelling of 40399924608 in words is "forty billion, three hundred ninety-nine million, nine hundred twenty-four thousand, six hundred eight".