399202 has 4 divisors (see below), whose sum is σ = 598806. Its totient is φ = 199600.

The previous prime is 399197. The next prime is 399221. The reversal of 399202 is 202993.

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

It can be written as a sum of positive squares in only one way, i.e., 358801 + 40401 = 599^2 + 201^2 .

It is an unprimeable number.

399202 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99799 + ... + 99802.

2³⁹⁹²⁰² is an apocalyptic number.

399202 is a deficient number, since it is larger than the sum of its proper divisors (199604).

399202 is a wasteful number, since it uses less digits than its factorization.

399202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199603.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 399202 is about 631.8243426776. The cubic root of 399202 is about 73.6315997343.

It can be divided in two parts, 3 and 99202, that multiplied together give a triangular number (297606 = T₇₇₁).

The spelling of 399202 in words is "three hundred ninety-nine thousand, two hundred two".