369969 has 4 divisors (see below), whose sum is σ = 493296. Its totient is φ = 246644.

The previous prime is 369961. The next prime is 369979. The reversal of 369969 is 969963.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 369969 - 2³ = 369961 is a prime.

It is a super-2 number, since 2×369969² = 273754121922, which contains 22 as substring.

It is a D-number.

369969 is a lucky number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 369969.

It is not an unprimeable number, because it can be changed into a prime (369961) 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, 61659 + ... + 61664.

It is an arithmetic number, because the mean of its divisors is an integer number (123324).

2³⁶⁹⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

369969 is a deficient number, since it is larger than the sum of its proper divisors (123327).

369969 is a wasteful number, since it uses less digits than its factorization.

369969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123326.

The product of its digits is 78732, while the sum is 42.

The square root of 369969 is about 608.2507706530. The cubic root of 369969 is about 71.7885385036.

The spelling of 369969 in words is "three hundred sixty-nine thousand, nine hundred sixty-nine".