905429 has 4 divisors (see below), whose sum is σ = 1034784. Its totient is φ = 776076.

The previous prime is 905413. The next prime is 905449. The reversal of 905429 is 924509.

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, and also an emirpimes, since its reverse is a distinct semiprime: 924509 = 41 ⋅22549.

It is not a de Polignac number, because 905429 - 2⁴ = 905413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905449) 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 3 ways as a sum of consecutive naturals, for example, 64667 + ... + 64680.

It is an arithmetic number, because the mean of its divisors is an integer number (258696).

2⁹⁰⁵⁴²⁹ is an apocalyptic number.

It is an amenable number.

905429 is a deficient number, since it is larger than the sum of its proper divisors (129355).

905429 is a wasteful number, since it uses less digits than its factorization.

905429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129354.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 905429 is about 951.5403302015. The cubic root of 905429 is about 96.7426842926.

The spelling of 905429 in words is "nine hundred five thousand, four hundred twenty-nine".