40239689448 has 192 divisors, whose sum is σ = 124341350400. Its totient is φ = 10789511040.

The previous prime is 40239689447. The next prime is 40239689461. The reversal of 40239689448 is 84498693204.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (40239689443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2382393 + ... + 2399223.

It is an arithmetic number, because the mean of its divisors is an integer number (647611200).

Almost surely, 2^40239689448 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 40239689448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62170675200).

40239689448 is an abundant number, since it is smaller than the sum of its proper divisors (84101660952).

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

40239689448 is a wasteful number, since it uses less digits than its factorization.

40239689448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16980 (or 16969 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 57.

The spelling of 40239689448 in words is "forty billion, two hundred thirty-nine million, six hundred eighty-nine thousand, four hundred forty-eight".