199906954492 has 24 divisors (see below), whose sum is σ = 404630948736. Its totient is φ = 84642186288.

The previous prime is 199906954459. The next prime is 199906954561. The reversal of 199906954492 is 294459609991.

199906954492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 43006918 + ... + 43011565.

It is an arithmetic number, because the mean of its divisors is an integer number (16859622864).

Almost surely, 2^199906954492 is an apocalyptic number.

It is an amenable number.

199906954492 is an abundant number, since it is smaller than the sum of its proper divisors (204723994244).

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

199906954492 is a wasteful number, since it uses less digits than its factorization.

199906954492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86018577 (or 86018575 counting only the distinct ones).

The product of its (nonzero) digits is 56687040, while the sum is 67.

The spelling of 199906954492 in words is "one hundred ninety-nine billion, nine hundred six million, nine hundred fifty-four thousand, four hundred ninety-two".