199766454 has 16 divisors (see below), whose sum is σ = 416904192. Its totient is φ = 63693608.

The previous prime is 199766453. The next prime is 199766459. The reversal of 199766454 is 454667991.

199766454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×199766454² = 79813272287468232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 199766397 and 199766406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199766453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723654 + ... + 723929.

It is an arithmetic number, because the mean of its divisors is an integer number (26056512).

Almost surely, 2^199766454 is an apocalyptic number.

199766454 is an abundant number, since it is smaller than the sum of its proper divisors (217137738).

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

199766454 is a wasteful number, since it uses less digits than its factorization.

199766454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447611.

The product of its digits is 1632960, while the sum is 51.

The square root of 199766454 is about 14133.8761137913. The cubic root of 199766454 is about 584.5758280990.

The spelling of 199766454 in words is "one hundred ninety-nine million, seven hundred sixty-six thousand, four hundred fifty-four".