40399260748 has 72 divisors (see below), whose sum is σ = 89116898976. Its totient is φ = 15685866240.

The previous prime is 40399260709. The next prime is 40399260749. The reversal of 40399260748 is 84706299304.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40399260695 and 40399260704.

It is not an unprimeable number, because it can be changed into a prime (40399260749) 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, 972336 + ... + 1013032.

It is an arithmetic number, because the mean of its divisors is an integer number (1237734708).

Almost surely, 2^40399260748 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 40399260748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44558449488).

40399260748 is an abundant number, since it is smaller than the sum of its proper divisors (48717638228).

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

40399260748 is a wasteful number, since it uses less digits than its factorization.

40399260748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41023 (or 41010 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 40399260748 in words is "forty billion, three hundred ninety-nine million, two hundred sixty thousand, seven hundred forty-eight".