199257941 has 4 divisors (see below), whose sum is σ = 199694412. Its totient is φ = 198821472.

The previous prime is 199257937. The next prime is 199257973. The reversal of 199257941 is 149752991.

199257941 = 419² + 420² + ... + 875².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 177449041 + 21808900 = 13321^2 + 4670^2 .

It is a cyclic number.

It is not a de Polignac number, because 199257941 - 2² = 199257937 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199257241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217550 + ... + 218463.

It is an arithmetic number, because the mean of its divisors is an integer number (49923603).

Almost surely, 2^199257941 is an apocalyptic number.

It is an amenable number.

199257941 is a deficient number, since it is larger than the sum of its proper divisors (436471).

199257941 is an equidigital number, since it uses as much as digits as its factorization.

199257941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436470.

The product of its digits is 204120, while the sum is 47.

The square root of 199257941 is about 14115.8754953421. The cubic root of 199257941 is about 584.0793867263.

The spelling of 199257941 in words is "one hundred ninety-nine million, two hundred fifty-seven thousand, nine hundred forty-one".