400020986198 has 8 divisors (see below), whose sum is σ = 600048684840. Its totient is φ = 200004757920.

The previous prime is 400020986191. The next prime is 400020986243. The reversal of 400020986198 is 891689020004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400020986191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2779868 + ... + 2920223.

It is an arithmetic number, because the mean of its divisors is an integer number (75006085605).

Almost surely, 2^400020986198 is an apocalyptic number.

400020986198 is a deficient number, since it is larger than the sum of its proper divisors (200027698642).

400020986198 is a wasteful number, since it uses less digits than its factorization.

400020986198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5735182.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 400020986198 in words is "four hundred billion, twenty million, nine hundred eighty-six thousand, one hundred ninety-eight".