1229858 has 16 divisors (see below), whose sum is σ = 2130624. Its totient is φ = 521520.

The previous prime is 1229827. The next prime is 1229869. The reversal of 1229858 is 8589221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1088 + ... + 1908.

It is an arithmetic number, because the mean of its divisors is an integer number (133164).

2^1229858 is an apocalyptic number.

1229858 is a deficient number, since it is larger than the sum of its proper divisors (900766).

1229858 is a wasteful number, since it uses less digits than its factorization.

1229858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937.

The product of its digits is 11520, while the sum is 35.

The square root of 1229858 is about 1108.9896302491. The cubic root of 1229858 is about 107.1400036489.

The spelling of 1229858 in words is "one million, two hundred twenty-nine thousand, eight hundred fifty-eight".