1422779947 has 2 divisors, whose sum is σ = 1422779948. Its totient is φ = 1422779946.

The previous prime is 1422779923. The next prime is 1422779951. The reversal of 1422779947 is 7499772241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1422779947 - 2¹¹ = 1422777899 is a prime.

It is a super-3 number, since 3×1422779947³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1422779894 and 1422779903.

It is not a weakly prime, because it can be changed into another prime (1422779447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711389973 + 711389974.

It is an arithmetic number, because the mean of its divisors is an integer number (711389974).

Almost surely, 2^1422779947 is an apocalyptic number.

1422779947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422779947 is an equidigital number, since it uses as much as digits as its factorization.

1422779947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1778112, while the sum is 52.

The square root of 1422779947 is about 37719.7553942228. The cubic root of 1422779947 is about 1124.7238688876.

The spelling of 1422779947 in words is "one billion, four hundred twenty-two million, seven hundred seventy-nine thousand, nine hundred forty-seven".