408429 has 16 divisors (see below), whose sum is σ = 691840. Its totient is φ = 233280.

The previous prime is 408427. The next prime is 408431. The reversal of 408429 is 924804.

It is an interprime number because it is at equal distance from previous prime (408427) and next prime (408431).

It is not a de Polignac number, because 408429 - 2¹ = 408427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 892 + ... + 1269.

It is an arithmetic number, because the mean of its divisors is an integer number (43240).

2⁴⁰⁸⁴²⁹ is an apocalyptic number.

It is an amenable number.

408429 is a deficient number, since it is larger than the sum of its proper divisors (283411).

408429 is a wasteful number, since it uses less digits than its factorization.

408429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 408429 is about 639.0845014550. The cubic root of 408429 is about 74.1945816451.

The spelling of 408429 in words is "four hundred eight thousand, four hundred twenty-nine".