40289899608 has 448 divisors, whose sum is σ = 137665536000. Its totient is φ = 10793212416.

The previous prime is 40289899579. The next prime is 40289899633. The reversal of 40289899608 is 80699898204.

40289899608 is a `hidden beast` number, since 402 + 89 + 8 + 99 + 60 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

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, 98508108 + ... + 98508516.

Almost surely, 2^40289899608 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 40289899608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68832768000).

40289899608 is an abundant number, since it is smaller than the sum of its proper divisors (97375636392).

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

40289899608 is a wasteful number, since it uses less digits than its factorization.

40289899608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 40289899608 in words is "forty billion, two hundred eighty-nine million, eight hundred ninety-nine thousand, six hundred eight".