1426555399 has 2 divisors, whose sum is σ = 1426555400. Its totient is φ = 1426555398.

The previous prime is 1426555373. The next prime is 1426555423. The reversal of 1426555399 is 9935556241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1426555399 - 2²³ = 1418166791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1426555309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713277699 + 713277700.

It is an arithmetic number, because the mean of its divisors is an integer number (713277700).

Almost surely, 2^1426555399 is an apocalyptic number.

1426555399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1426555399 is an equidigital number, since it uses as much as digits as its factorization.

1426555399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458000, while the sum is 49.

The square root of 1426555399 is about 37769.7683207086. The cubic root of 1426555399 is about 1125.7178362548.

The spelling of 1426555399 in words is "one billion, four hundred twenty-six million, five hundred fifty-five thousand, three hundred ninety-nine".