404968279 has 2 divisors, whose sum is σ = 404968280. Its totient is φ = 404968278.

The previous prime is 404968253. The next prime is 404968297. The reversal of 404968279 is 972869404.

Together with next prime (404968297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404968279 - 2⁵ = 404968247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404968229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202484139 + 202484140.

It is an arithmetic number, because the mean of its divisors is an integer number (202484140).

Almost surely, 2^404968279 is an apocalyptic number.

404968279 is a deficient number, since it is larger than the sum of its proper divisors (1).

404968279 is an equidigital number, since it uses as much as digits as its factorization.

404968279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 404968279 is about 20123.8236674843. The cubic root of 404968279 is about 739.8443055693.

The spelling of 404968279 in words is "four hundred four million, nine hundred sixty-eight thousand, two hundred seventy-nine".