1423769917 has 2 divisors, whose sum is σ = 1423769918. Its totient is φ = 1423769916.

The previous prime is 1423769863. The next prime is 1423769923. The reversal of 1423769917 is 7199673241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1159674916 + 264095001 = 34054^2 + 16251^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423769917 - 2¹⁵ = 1423737149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423769987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711884958 + 711884959.

It is an arithmetic number, because the mean of its divisors is an integer number (711884959).

Almost surely, 2^1423769917 is an apocalyptic number.

It is an amenable number.

1423769917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423769917 is an equidigital number, since it uses as much as digits as its factorization.

1423769917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 49.

The square root of 1423769917 is about 37732.8758114194. The cubic root of 1423769917 is about 1124.9846692890.

The spelling of 1423769917 in words is "one billion, four hundred twenty-three million, seven hundred sixty-nine thousand, nine hundred seventeen".