396669 has 16 divisors (see below), whose sum is σ = 651392. Its totient is φ = 209088.

The previous prime is 396667. The next prime is 396679. The reversal of 396669 is 966693.

It is not a de Polignac number, because 396669 - 2¹ = 396667 is a prime.

It is a super-2 number, since 2×396669² = 314692591122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396667) 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 15 ways as a sum of consecutive naturals, for example, 454 + ... + 999.

It is an arithmetic number, because the mean of its divisors is an integer number (40712).

2³⁹⁶⁶⁶⁹ is an apocalyptic number.

396669 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

396669 is a deficient number, since it is larger than the sum of its proper divisors (254723).

396669 is a wasteful number, since it uses less digits than its factorization.

396669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476.

The product of its digits is 52488, while the sum is 39.

The square root of 396669 is about 629.8166399834. The cubic root of 396669 is about 73.4755344552.

The spelling of 396669 in words is "three hundred ninety-six thousand, six hundred sixty-nine".