909429 has 4 divisors (see below), whose sum is σ = 1212576. Its totient is φ = 606284.

The previous prime is 909409. The next prime is 909437. The reversal of 909429 is 924909.

It is a happy number.

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: 924909 = 3 ⋅308303.

It is a cyclic number.

It is not a de Polignac number, because 909429 - 2⁷ = 909301 is a prime.

It is a super-2 number, since 2×909429² = 1654122212082, which contains 22 as substring.

It is a D-number.

909429 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 909429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (909409) 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, 151569 + ... + 151574.

It is an arithmetic number, because the mean of its divisors is an integer number (303144).

2⁹⁰⁹⁴²⁹ is an apocalyptic number.

It is an amenable number.

909429 is a deficient number, since it is larger than the sum of its proper divisors (303147).

909429 is a wasteful number, since it uses less digits than its factorization.

909429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303146.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 909429 is about 953.6398691330. The cubic root of 909429 is about 96.8849381410.

It can be divided in two parts, 90942 and 9, that added together give a triangular number (90951 = T₄₂₆).

The spelling of 909429 in words is "nine hundred nine thousand, four hundred twenty-nine".