1229418 has 20 divisors (see below), whose sum is σ = 2755170. Its totient is φ = 409752.

The previous prime is 1229401. The next prime is 1229443. The reversal of 1229418 is 8149221.

It can be written as a sum of positive squares in only one way, i.e., 1225449 + 3969 = 1107^2 + 63^2 .

It is a super-2 number, since 2×1229418² = 3022937237448, which contains 22 as substring.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1229391 and 1229400.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3633 + ... + 3956.

2^1229418 is an apocalyptic number.

1229418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1229418 is an abundant number, since it is smaller than the sum of its proper divisors (1525752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1229418 is an equidigital number, since it uses as much as digits as its factorization.

1229418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7603 (or 7594 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1229418 is about 1108.7912337316. The cubic root of 1229418 is about 107.1272251480.

The spelling of 1229418 in words is "one million, two hundred twenty-nine thousand, four hundred eighteen".