1209673 has 4 divisors (see below), whose sum is σ = 1273360. Its totient is φ = 1145988.

The previous prime is 1209671. The next prime is 1209697. The reversal of 1209673 is 3769021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3769021 = 389 ⋅9689.

It is a cyclic number.

It is not a de Polignac number, because 1209673 - 2¹ = 1209671 is a prime.

It is a Duffinian number.

1209673 is a lucky number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1209671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31815 + ... + 31852.

It is an arithmetic number, because the mean of its divisors is an integer number (318340).

2^1209673 is an apocalyptic number.

It is an amenable number.

1209673 is a deficient number, since it is larger than the sum of its proper divisors (63687).

1209673 is an equidigital number, since it uses as much as digits as its factorization.

1209673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63686.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1209673 is about 1099.8513535928. The cubic root of 1209673 is about 106.5506235850.

The spelling of 1209673 in words is "one million, two hundred nine thousand, six hundred seventy-three".