199253457 has 24 divisors (see below), whose sum is σ = 310425024. Its totient is φ = 122429664.

The previous prime is 199253449. The next prime is 199253459. The reversal of 199253457 is 754352991.

It is a happy number.

199253457 is a `hidden beast` number, since 199 + 2 + 5 + 3 + 457 = 666.

It is not a de Polignac number, because 199253457 - 2³ = 199253449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199253459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151798 + ... + 153104.

It is an arithmetic number, because the mean of its divisors is an integer number (12934376).

Almost surely, 2^199253457 is an apocalyptic number.

It is an amenable number.

199253457 is a deficient number, since it is larger than the sum of its proper divisors (111171567).

199253457 is a wasteful number, since it uses less digits than its factorization.

199253457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629 (or 2626 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 199253457 is about 14115.7166661845. The cubic root of 199253457 is about 584.0750054176.

The spelling of 199253457 in words is "one hundred ninety-nine million, two hundred fifty-three thousand, four hundred fifty-seven".