395138 has 4 divisors (see below), whose sum is σ = 592710. Its totient is φ = 197568.

The previous prime is 395137. The next prime is 395141. The reversal of 395138 is 831593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831593 = 7 ⋅118799.

It can be written as a sum of positive squares in only one way, i.e., 253009 + 142129 = 503^2 + 377^2 .

It is a super-2 number, since 2×395138² = 312268078088, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 395138.

It is not an unprimeable number, because it can be changed into a prime (395137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98783 + ... + 98786.

2³⁹⁵¹³⁸ is an apocalyptic number.

395138 is a deficient number, since it is larger than the sum of its proper divisors (197572).

395138 is a wasteful number, since it uses less digits than its factorization.

395138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197571.

The product of its digits is 3240, while the sum is 29.

The square root of 395138 is about 628.6000318167. The cubic root of 395138 is about 73.3808828444.

The spelling of 395138 in words is "three hundred ninety-five thousand, one hundred thirty-eight".