1223958 has 16 divisors (see below), whose sum is σ = 2467440. Its totient is φ = 404736.

The previous prime is 1223953. The next prime is 1223977. The reversal of 1223958 is 8593221.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78 + ... + 1566.

It is an arithmetic number, because the mean of its divisors is an integer number (154215).

2^1223958 is an apocalyptic number.

1223958 is an abundant number, since it is smaller than the sum of its proper divisors (1243482).

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

1223958 is a wasteful number, since it uses less digits than its factorization.

1223958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631.

The product of its digits is 4320, while the sum is 30.

The square root of 1223958 is about 1106.3263532973. The cubic root of 1223958 is about 106.9684013020.

It can be divided in two parts, 12 and 23958, that multiplied together give a cube (287496 = 66³).

The spelling of 1223958 in words is "one million, two hundred twenty-three thousand, nine hundred fifty-eight".