299278799 has 2 divisors, whose sum is σ = 299278800. Its totient is φ = 299278798.

The previous prime is 299278741. The next prime is 299278807. The reversal of 299278799 is 997872992.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 299278799 - 2¹⁶ = 299213263 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (299278729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149639399 + 149639400.

It is an arithmetic number, because the mean of its divisors is an integer number (149639400).

Almost surely, 2^299278799 is an apocalyptic number.

299278799 is a deficient number, since it is larger than the sum of its proper divisors (1).

299278799 is an equidigital number, since it uses as much as digits as its factorization.

299278799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 62.

The square root of 299278799 is about 17299.6762686473. The cubic root of 299278799 is about 668.8960799584.

The spelling of 299278799 in words is "two hundred ninety-nine million, two hundred seventy-eight thousand, seven hundred ninety-nine".