1308973 has 4 divisors (see below), whose sum is σ = 1354140. Its totient is φ = 1263808.

The previous prime is 1308943. The next prime is 1308977. The reversal of 1308973 is 3798031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 896809 = 642^2 + 947^2 .

It is a cyclic number.

It is not a de Polignac number, because 1308973 - 2¹³ = 1300781 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22540 + ... + 22597.

It is an arithmetic number, because the mean of its divisors is an integer number (338535).

2^1308973 is an apocalyptic number.

It is an amenable number.

1308973 is a deficient number, since it is larger than the sum of its proper divisors (45167).

1308973 is an equidigital number, since it uses as much as digits as its factorization.

1308973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45166.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1308973 is about 1144.1035792270. The cubic root of 1308973 is about 109.3898170947.

The spelling of 1308973 in words is "one million, three hundred eight thousand, nine hundred seventy-three".