199400154 has 8 divisors (see below), whose sum is σ = 398800320. Its totient is φ = 66466716.

The previous prime is 199400119. The next prime is 199400161. The reversal of 199400154 is 451004991.

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

199400154 is an admirable number.

It is a super-4 number, since 4×199400154⁴ (a number of 34 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16616674 + ... + 16616685.

It is an arithmetic number, because the mean of its divisors is an integer number (49850040).

Almost surely, 2^199400154 is an apocalyptic number.

199400154 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199400154 is a wasteful number, since it uses less digits than its factorization.

199400154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33233364.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 199400154 is about 14120.9119393898. The cubic root of 199400154 is about 584.2183087152.

The spelling of 199400154 in words is "one hundred ninety-nine million, four hundred thousand, one hundred fifty-four".