199280755 has 4 divisors (see below), whose sum is σ = 239136912. Its totient is φ = 159424600.

The previous prime is 199280747. The next prime is 199280821. The reversal of 199280755 is 557082991.

199280755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557082991 = 22013 ⋅25307.

It is not a de Polignac number, because 199280755 - 2³ = 199280747 is a prime.

It is a Duffinian number.

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, 19928071 + ... + 19928080.

It is an arithmetic number, because the mean of its divisors is an integer number (59784228).

Almost surely, 2^199280755 is an apocalyptic number.

199280755 is a deficient number, since it is larger than the sum of its proper divisors (39856157).

199280755 is an equidigital number, since it uses as much as digits as its factorization.

199280755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39856156.

The product of its (nonzero) digits is 226800, while the sum is 46.

The square root of 199280755 is about 14116.6835694507. The cubic root of 199280755 is about 584.1016772283.

The spelling of 199280755 in words is "one hundred ninety-nine million, two hundred eighty thousand, seven hundred fifty-five".