494128799 has 2 divisors, whose sum is σ = 494128800. Its totient is φ = 494128798.

The previous prime is 494128771. The next prime is 494128837. The reversal of 494128799 is 997821494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 494128799 - 2²⁴ = 477351583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 494128799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494128729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247064399 + 247064400.

It is an arithmetic number, because the mean of its divisors is an integer number (247064400).

Almost surely, 2^494128799 is an apocalyptic number.

494128799 is a deficient number, since it is larger than the sum of its proper divisors (1).

494128799 is an equidigital number, since it uses as much as digits as its factorization.

494128799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 53.

The square root of 494128799 is about 22229.0080525425. The cubic root of 494128799 is about 790.5816359725.

The spelling of 494128799 in words is "four hundred ninety-four million, one hundred twenty-eight thousand, seven hundred ninety-nine".