40000222440 has 64 divisors (see below), whose sum is σ = 133334078400. Its totient is φ = 10666725696.

The previous prime is 40000222399. The next prime is 40000222463. The reversal of 40000222440 is 4422200004.

40000222440 is a `hidden beast` number, since 4 + 0 + 0 + 0 + 0 + 222 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18517542 + ... + 18519701.

It is an arithmetic number, because the mean of its divisors is an integer number (2083344975).

Almost surely, 2^40000222440 is an apocalyptic number.

40000222440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40000222440 is an abundant number, since it is smaller than the sum of its proper divisors (93333855960).

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

40000222440 is a wasteful number, since it uses less digits than its factorization.

40000222440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37037263 (or 37037253 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 40000222440 its reverse (4422200004), we get a palindrome (44422422444).

The spelling of 40000222440 in words is "forty billion, two hundred twenty-two thousand, four hundred forty".