1804429 has 4 divisors (see below), whose sum is σ = 1968480. Its totient is φ = 1640380.

The previous prime is 1804421. The next prime is 1804433. The reversal of 1804429 is 9244081.

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 1804429 - 2³ = 1804421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1804397 and 1804406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804421) 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, 82009 + ... + 82030.

It is an arithmetic number, because the mean of its divisors is an integer number (492120).

2^1804429 is an apocalyptic number.

It is an amenable number.

1804429 is a deficient number, since it is larger than the sum of its proper divisors (164051).

1804429 is a wasteful number, since it uses less digits than its factorization.

1804429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164050.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1804429 is about 1343.2903632499. The cubic root of 1804429 is about 121.7437288321.

The spelling of 1804429 in words is "one million, eight hundred four thousand, four hundred twenty-nine".