423535604449 has 2 divisors, whose sum is σ = 423535604450. Its totient is φ = 423535604448.

The previous prime is 423535604357. The next prime is 423535604461. The reversal of 423535604449 is 944406535324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377970432849 + 45565171600 = 614793^2 + 213460^2 .

It is a cyclic number.

It is not a de Polignac number, because 423535604449 - 2²³ = 423527215841 is a prime.

It is not a weakly prime, because it can be changed into another prime (423535604489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211767802224 + 211767802225.

It is an arithmetic number, because the mean of its divisors is an integer number (211767802225).

Almost surely, 2^423535604449 is an apocalyptic number.

It is an amenable number.

423535604449 is a deficient number, since it is larger than the sum of its proper divisors (1).

423535604449 is an equidigital number, since it uses as much as digits as its factorization.

423535604449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 423535604449 in words is "four hundred twenty-three billion, five hundred thirty-five million, six hundred four thousand, four hundred forty-nine".