1408226779 has 2 divisors, whose sum is σ = 1408226780. Its totient is φ = 1408226778.

The previous prime is 1408226761. The next prime is 1408226791. The reversal of 1408226779 is 9776228041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1408226779 - 2²⁵ = 1374672347 is a prime.

It is a super-2 number, since 2×1408226779² = 3966205322185429682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1408226759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704113389 + 704113390.

It is an arithmetic number, because the mean of its divisors is an integer number (704113390).

Almost surely, 2^1408226779 is an apocalyptic number.

1408226779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1408226779 is an equidigital number, since it uses as much as digits as its factorization.

1408226779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 1408226779 is about 37526.3477972477. The cubic root of 1408226779 is about 1120.8759036224.

The spelling of 1408226779 in words is "one billion, four hundred eight million, two hundred twenty-six thousand, seven hundred seventy-nine".