404779699 has 2 divisors, whose sum is σ = 404779700. Its totient is φ = 404779698.

The previous prime is 404779631. The next prime is 404779717. The reversal of 404779699 is 996977404.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404779699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404779399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202389849 + 202389850.

It is an arithmetic number, because the mean of its divisors is an integer number (202389850).

Almost surely, 2^404779699 is an apocalyptic number.

404779699 is a deficient number, since it is larger than the sum of its proper divisors (1).

404779699 is an equidigital number, since it uses as much as digits as its factorization.

404779699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The square root of 404779699 is about 20119.1376306242. The cubic root of 404779699 is about 739.7294476010.

It can be divided in two parts, 40477 and 9699, that added together give a square (50176 = 224²).

The spelling of 404779699 in words is "four hundred four million, seven hundred seventy-nine thousand, six hundred ninety-nine".