1229355 has 24 divisors (see below), whose sum is σ = 2257632. Its totient is φ = 616704.

The previous prime is 1229353. The next prime is 1229359. The reversal of 1229355 is 5539221.

It is not a de Polignac number, because 1229355 - 2¹ = 1229353 is a prime.

It is a super-2 number, since 2×1229355² = 3022627432050, which contains 22 as substring.

1229355 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1229351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39 + ... + 1568.

It is an arithmetic number, because the mean of its divisors is an integer number (94068).

2^1229355 is an apocalyptic number.

1229355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1229355 is a deficient number, since it is larger than the sum of its proper divisors (1028277).

1229355 is a wasteful number, since it uses less digits than its factorization.

1229355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635 (or 1632 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 1229355 is about 1108.7628240521. The cubic root of 1229355 is about 107.1253952495.

The spelling of 1229355 in words is "one million, two hundred twenty-nine thousand, three hundred fifty-five".