406369 has 4 divisors (see below), whose sum is σ = 408240. Its totient is φ = 404500.

The previous prime is 406361. The next prime is 406381. The reversal of 406369 is 963604.

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 406369 - 2³ = 406361 is a prime.

It is a super-2 number, since 2×406369² = 330271528322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406361) 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, 559 + ... + 1060.

It is an arithmetic number, because the mean of its divisors is an integer number (102060).

2⁴⁰⁶³⁶⁹ is an apocalyptic number.

It is an amenable number.

406369 is a deficient number, since it is larger than the sum of its proper divisors (1871).

406369 is a wasteful number, since it uses less digits than its factorization.

406369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 406369 is about 637.4707836442. The cubic root of 406369 is about 74.0696325331.

The spelling of 406369 in words is "four hundred six thousand, three hundred sixty-nine".