40221223840 has 96 divisors (see below), whose sum is σ = 110908030464. Its totient is φ = 13496709120.

The previous prime is 40221223817. The next prime is 40221223841. The reversal of 40221223840 is 4832212204.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 40221223799 and 40221223808.

It is not an unprimeable number, because it can be changed into a prime (40221223841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329401 + ... + 434680.

It is an arithmetic number, because the mean of its divisors is an integer number (1155291984).

Almost surely, 2^40221223840 is an apocalyptic number.

40221223840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40221223840 is an abundant number, since it is smaller than the sum of its proper divisors (70686806624).

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

40221223840 is a wasteful number, since it uses less digits than its factorization.

40221223840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764150 (or 764142 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The spelling of 40221223840 in words is "forty billion, two hundred twenty-one million, two hundred twenty-three thousand, eight hundred forty".