1223973 has 24 divisors (see below), whose sum is σ = 1886976. Its totient is φ = 763200.

The previous prime is 1223953. The next prime is 1223977. The reversal of 1223973 is 3793221.

It is not a de Polignac number, because 1223973 - 2⁵ = 1223941 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223977) 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, 11386 + ... + 11492.

It is an arithmetic number, because the mean of its divisors is an integer number (78624).

2^1223973 is an apocalyptic number.

It is an amenable number.

1223973 is a deficient number, since it is larger than the sum of its proper divisors (663003).

1223973 is a wasteful number, since it uses less digits than its factorization.

1223973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 182 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 1223973 is about 1106.3331324696. Note that the first 3 decimals coincide. The cubic root of 1223973 is about 106.9688382776.

It can be divided in two parts, 122 and 3973, that added together give a triangular number (4095 = T₉₀).

The spelling of 1223973 in words is "one million, two hundred twenty-three thousand, nine hundred seventy-three".