199400145 has 16 divisors (see below), whose sum is σ = 364617600. Its totient is φ = 91154304.

The previous prime is 199400119. The next prime is 199400161. The reversal of 199400145 is 541004991.

It is not a de Polignac number, because 199400145 - 2⁶ = 199400081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949420 + ... + 949629.

It is an arithmetic number, because the mean of its divisors is an integer number (22788600).

Almost surely, 2^199400145 is an apocalyptic number.

199400145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199400145 is a deficient number, since it is larger than the sum of its proper divisors (165217455).

199400145 is a wasteful number, since it uses less digits than its factorization.

199400145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899064.

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

The square root of 199400145 is about 14120.9116207134. The cubic root of 199400145 is about 584.2182999256.

The spelling of 199400145 in words is "one hundred ninety-nine million, four hundred thousand, one hundred forty-five".