8278973 has 2 divisors, whose sum is σ = 8278974. Its totient is φ = 8278972.

The previous prime is 8278969. The next prime is 8278987. The reversal of 8278973 is 3798728.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4826809 + 3452164 = 2197^2 + 1858^2 .

It is a cyclic number.

It is not a de Polignac number, because 8278973 - 2² = 8278969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8278943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4139486 + 4139487.

It is an arithmetic number, because the mean of its divisors is an integer number (4139487).

Almost surely, 2^8278973 is an apocalyptic number.

It is an amenable number.

8278973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8278973 is an equidigital number, since it uses as much as digits as its factorization.

8278973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 8278973 is about 2877.3204548677. The cubic root of 8278973 is about 202.2982637563.

The spelling of 8278973 in words is "eight million, two hundred seventy-eight thousand, nine hundred seventy-three".