409469 has 8 divisors (see below), whose sum is σ = 450240. Its totient is φ = 370656.

The previous prime is 409463. The next prime is 409471. The reversal of 409469 is 964904.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 409469 - 2¹² = 405373 is a prime.

It is a super-2 number, since 2×409469² = 335329723922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32 + ... + 905.

It is an arithmetic number, because the mean of its divisors is an integer number (56280).

2⁴⁰⁹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

409469 is a deficient number, since it is larger than the sum of its proper divisors (40771).

409469 is a wasteful number, since it uses less digits than its factorization.

409469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 409469 is about 639.8976480657. The cubic root of 409469 is about 74.2575032002.

It can be divided in two parts, 409 and 469, that added together give a palindrome (878).

The spelling of 409469 in words is "four hundred nine thousand, four hundred sixty-nine".