162399 has 4 divisors (see below), whose sum is σ = 216536. Its totient is φ = 108264.

The previous prime is 162391. The next prime is 162413. The reversal of 162399 is 993261.

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

It is not a de Polignac number, because 162399 - 2³ = 162391 is a prime.

It is a D-number.

It is a Duffinian number.

162399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162391) 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, 27064 + ... + 27069.

It is an arithmetic number, because the mean of its divisors is an integer number (54134).

2¹⁶²³⁹⁹ is an apocalyptic number.

162399 is a deficient number, since it is larger than the sum of its proper divisors (54137).

162399 is an equidigital number, since it uses as much as digits as its factorization.

162399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54136.

The product of its digits is 2916, while the sum is 30.

The square root of 162399 is about 402.9875928611. The cubic root of 162399 is about 54.5583360990.

It can be divided in two parts, 162 and 399, that added together give a triangular number (561 = T₃₃).

The spelling of 162399 in words is "one hundred sixty-two thousand, three hundred ninety-nine".