1229404 has 12 divisors (see below), whose sum is σ = 2347128. Its totient is φ = 558800.

The previous prime is 1229401. The next prime is 1229443. The reversal of 1229404 is 4049221.

It is a super-2 number, since 2×1229404² = 3022868390432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229401) 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, 13927 + ... + 14014.

It is an arithmetic number, because the mean of its divisors is an integer number (195594).

2^1229404 is an apocalyptic number.

It is an amenable number.

1229404 is a deficient number, since it is larger than the sum of its proper divisors (1117724).

1229404 is a wasteful number, since it uses less digits than its factorization.

1229404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27956 (or 27954 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1229404 is about 1108.7849205324. The cubic root of 1229404 is about 107.1268185093.

The spelling of 1229404 in words is "one million, two hundred twenty-nine thousand, four hundred four".