199892789440 has 56 divisors (see below), whose sum is σ = 477688851072. Its totient is φ = 79672535040.

The previous prime is 199892789321. The next prime is 199892789513. The reversal of 199892789440 is 44987298991.

It is a self number, because there is not a number n which added to its sum of digits gives 199892789440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021584 + ... + 1201423.

Almost surely, 2^199892789440 is an apocalyptic number.

199892789440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199892789440 is an abundant number, since it is smaller than the sum of its proper divisors (277796061632).

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

199892789440 is a wasteful number, since it uses less digits than its factorization.

199892789440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223305 (or 2223295 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 70.

The spelling of 199892789440 in words is "one hundred ninety-nine billion, eight hundred ninety-two million, seven hundred eighty-nine thousand, four hundred forty".