1423748449 has 2 divisors, whose sum is σ = 1423748450. Its totient is φ = 1423748448.

The previous prime is 1423748401. The next prime is 1423748471. The reversal of 1423748449 is 9448473241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1320014224 + 103734225 = 36332^2 + 10185^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423748449 - 2⁹ = 1423747937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1423748399 and 1423748408.

It is not a weakly prime, because it can be changed into another prime (1423748149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711874224 + 711874225.

It is an arithmetic number, because the mean of its divisors is an integer number (711874225).

Almost surely, 2^1423748449 is an apocalyptic number.

It is an amenable number.

1423748449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423748449 is an equidigital number, since it uses as much as digits as its factorization.

1423748449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 46.

The square root of 1423748449 is about 37732.5913369331. The cubic root of 1423748449 is about 1124.9790149830.

The spelling of 1423748449 in words is "one billion, four hundred twenty-three million, seven hundred forty-eight thousand, four hundred forty-nine".