43421916398 has 32 divisors (see below), whose sum is σ = 77042750400. Its totient is φ = 17958737664.

The previous prime is 43421916397. The next prime is 43421916401. The reversal of 43421916398 is 89361912434.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43421916397) 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, 822536 + ... + 873732.

It is an arithmetic number, because the mean of its divisors is an integer number (2407585950).

Almost surely, 2^43421916398 is an apocalyptic number.

43421916398 is a deficient number, since it is larger than the sum of its proper divisors (33620834002).

43421916398 is a wasteful number, since it uses less digits than its factorization.

43421916398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53324.

The product of its digits is 1119744, while the sum is 50.

The spelling of 43421916398 in words is "forty-three billion, four hundred twenty-one million, nine hundred sixteen thousand, three hundred ninety-eight".