379966 has 4 divisors (see below), whose sum is σ = 569952. Its totient is φ = 189982.

The previous prime is 379963. The next prime is 379979. The reversal of 379966 is 669973.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 669973 = 53 ⋅12641.

It is a super-2 number, since 2×379966² = 288748322312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379963) 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 as a sum of consecutive naturals, namely, 94990 + ... + 94993.

It is an arithmetic number, because the mean of its divisors is an integer number (142488).

2³⁷⁹⁹⁶⁶ is an apocalyptic number.

379966 is a deficient number, since it is larger than the sum of its proper divisors (189986).

379966 is a wasteful number, since it uses less digits than its factorization.

379966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189985.

The product of its digits is 61236, while the sum is 40.

The square root of 379966 is about 616.4138220384. The cubic root of 379966 is about 72.4294041303.

The spelling of 379966 in words is "three hundred seventy-nine thousand, nine hundred sixty-six".