694404479 has 2 divisors, whose sum is σ = 694404480. Its totient is φ = 694404478.

The previous prime is 694404467. The next prime is 694404497. The reversal of 694404479 is 974404496.

Together with next prime (694404497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 694404479 - 2²⁴ = 677627263 is a prime.

It is a super-2 number, since 2×694404479² = 964395160910522882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (694404439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347202239 + 347202240.

It is an arithmetic number, because the mean of its divisors is an integer number (347202240).

Almost surely, 2^694404479 is an apocalyptic number.

694404479 is a deficient number, since it is larger than the sum of its proper divisors (1).

694404479 is an equidigital number, since it uses as much as digits as its factorization.

694404479 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 47.

The square root of 694404479 is about 26351.5555328334. Note that the first 4 decimals coincide. The cubic root of 694404479 is about 885.5318194775.

The spelling of 694404479 in words is "six hundred ninety-four million, four hundred four thousand, four hundred seventy-nine".