40398798222 has 128 divisors (see below), whose sum is σ = 97011532800. Its totient is φ = 12419827200.

The previous prime is 40398798217. The next prime is 40398798233. The reversal of 40398798222 is 22289789304.

It is a happy number.

40398798222 is a `hidden beast` number, since 403 + 9 + 8 + 7 + 9 + 8 + 222 = 666.

It is a super-2 number, since 2×40398798222² (a number of 22 digits) contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 30581322 + ... + 30582642.

It is an arithmetic number, because the mean of its divisors is an integer number (757902600).

Almost surely, 2^40398798222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40398798222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48505766400).

40398798222 is an abundant number, since it is smaller than the sum of its proper divisors (56612734578).

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

40398798222 is a wasteful number, since it uses less digits than its factorization.

40398798222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 40398798222 in words is "forty billion, three hundred ninety-eight million, seven hundred ninety-eight thousand, two hundred twenty-two".