199155464 has 8 divisors (see below), whose sum is σ = 373416510. Its totient is φ = 99577728.

The previous prime is 199155433. The next prime is 199155469. The reversal of 199155464 is 464551991.

It can be written as a sum of positive squares in only one way, i.e., 113592964 + 85562500 = 10658^2 + 9250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (199155469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12447209 + ... + 12447224.

Almost surely, 2^199155464 is an apocalyptic number.

It is an amenable number.

199155464 is a deficient number, since it is larger than the sum of its proper divisors (174261046).

199155464 is a wasteful number, since it uses less digits than its factorization.

199155464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24894439 (or 24894435 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The square root of 199155464 is about 14112.2451792760. The cubic root of 199155464 is about 583.9792402078.

The spelling of 199155464 in words is "one hundred ninety-nine million, one hundred fifty-five thousand, four hundred sixty-four".