8372779 has 2 divisors, whose sum is σ = 8372780. Its totient is φ = 8372778.

The previous prime is 8372773. The next prime is 8372783. The reversal of 8372779 is 9772738.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8372779 - 2⁵ = 8372747 is a prime.

It is not a weakly prime, because it can be changed into another prime (8372773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4186389 + 4186390.

It is an arithmetic number, because the mean of its divisors is an integer number (4186390).

Almost surely, 2^8372779 is an apocalyptic number.

8372779 is a deficient number, since it is larger than the sum of its proper divisors (1).

8372779 is an equidigital number, since it uses as much as digits as its factorization.

8372779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 43.

The square root of 8372779 is about 2893.5754698988. The cubic root of 8372779 is about 203.0594517967.

The spelling of 8372779 in words is "eight million, three hundred seventy-two thousand, seven hundred seventy-nine".