1229955 has 16 divisors (see below), whose sum is σ = 1983744. Its totient is φ = 650720.

The previous prime is 1229941. The next prime is 1229957. The reversal of 1229955 is 5599221.

It is not a de Polignac number, because 1229955 - 2⁴ = 1229939 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1229957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2260 + ... + 2750.

It is an arithmetic number, because the mean of its divisors is an integer number (123984).

2^1229955 is an apocalyptic number.

1229955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1229955 is a deficient number, since it is larger than the sum of its proper divisors (753789).

1229955 is a wasteful number, since it uses less digits than its factorization.

1229955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666.

The product of its digits is 8100, while the sum is 33.

The square root of 1229955 is about 1109.0333628886. The cubic root of 1229955 is about 107.1428203174.

The spelling of 1229955 in words is "one million, two hundred twenty-nine thousand, nine hundred fifty-five".