199085454 has 48 divisors (see below), whose sum is σ = 441073152. Its totient is φ = 64882944.

The previous prime is 199085449. The next prime is 199085479. The reversal of 199085454 is 454580991.

199085454 is a `hidden beast` number, since 19 + 90 + 8 + 545 + 4 = 666.

It is a super-2 number, since 2×199085454² = 79270035988772232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166282 + ... + 167474.

It is an arithmetic number, because the mean of its divisors is an integer number (9189024).

Almost surely, 2^199085454 is an apocalyptic number.

199085454 is an abundant number, since it is smaller than the sum of its proper divisors (241987698).

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

199085454 is a wasteful number, since it uses less digits than its factorization.

199085454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 199085454 is about 14109.7644913018. The cubic root of 199085454 is about 583.9108025871.

The spelling of 199085454 in words is "one hundred ninety-nine million, eighty-five thousand, four hundred fifty-four".