40293821900 has 36 divisors (see below), whose sum is σ = 91239233232. Its totient is φ = 15416765760.

The previous prime is 40293821861. The next prime is 40293821903. The reversal of 40293821900 is 912839204.

It is a super-2 number, since 2×40293821900² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40293821903) 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 11 ways as a sum of consecutive naturals, for example, 8757227 + ... + 8761826.

Almost surely, 2^40293821900 is an apocalyptic number.

It is an amenable number.

40293821900 is an abundant number, since it is smaller than the sum of its proper divisors (50945411332).

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

40293821900 is a wasteful number, since it uses less digits than its factorization.

40293821900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17519090 (or 17519083 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 40293821900 in words is "forty billion, two hundred ninety-three million, eight hundred twenty-one thousand, nine hundred".