1445923 has 4 divisors (see below), whose sum is σ = 1485040. Its totient is φ = 1406808.

The previous prime is 1445921. The next prime is 1445929. The reversal of 1445923 is 3295441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1445923 - 2¹ = 1445921 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1445891 and 1445900.

It is not an unprimeable number, because it can be changed into a prime (1445921) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19503 + ... + 19576.

It is an arithmetic number, because the mean of its divisors is an integer number (371260).

2^1445923 is an apocalyptic number.

1445923 is a deficient number, since it is larger than the sum of its proper divisors (39117).

1445923 is an equidigital number, since it uses as much as digits as its factorization.

1445923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39116.

The product of its digits is 4320, while the sum is 28.

The square root of 1445923 is about 1202.4653841171. The cubic root of 1445923 is about 113.0789382389.

The spelling of 1445923 in words is "one million, four hundred forty-five thousand, nine hundred twenty-three".