397199 has 4 divisors (see below), whose sum is σ = 433320. Its totient is φ = 361080.

The previous prime is 397183. The next prime is 397211. The reversal of 397199 is 991793.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991793 = 11 ⋅90163.

It is a cyclic number.

It is not a de Polignac number, because 397199 - 2⁴ = 397183 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18044 + ... + 18065.

It is an arithmetic number, because the mean of its divisors is an integer number (108330).

2³⁹⁷¹⁹⁹ is an apocalyptic number.

397199 is a deficient number, since it is larger than the sum of its proper divisors (36121).

397199 is a wasteful number, since it uses less digits than its factorization.

397199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36120.

The product of its digits is 15309, while the sum is 38.

The square root of 397199 is about 630.2372569120. The cubic root of 397199 is about 73.5082440966.

It can be divided in two parts, 3971 and 99, that multiplied together give a square (393129 = 627²).

The spelling of 397199 in words is "three hundred ninety-seven thousand, one hundred ninety-nine".