1423769849 has 2 divisors, whose sum is σ = 1423769850. Its totient is φ = 1423769848.

The previous prime is 1423769833. The next prime is 1423769863. The reversal of 1423769849 is 9489673241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1028356624 + 395413225 = 32068^2 + 19885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423769849 - 2⁴ = 1423769833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1423769849.

It is not a weakly prime, because it can be changed into another prime (1423769549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711884924 + 711884925.

It is an arithmetic number, because the mean of its divisors is an integer number (711884925).

Almost surely, 2^1423769849 is an apocalyptic number.

It is an amenable number.

1423769849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423769849 is an equidigital number, since it uses as much as digits as its factorization.

1423769849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 53.

The square root of 1423769849 is about 37732.8749103484. The cubic root of 1423769849 is about 1124.9846513791.

The spelling of 1423769849 in words is "one billion, four hundred twenty-three million, seven hundred sixty-nine thousand, eight hundred forty-nine".