423436538 has 24 divisors (see below), whose sum is σ = 745411572. Its totient is φ = 179862144.

The previous prime is 423436537. The next prime is 423436553. The reversal of 423436538 is 835634324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 381147529 + 42289009 = 19523^2 + 6503^2 .

It is not an unprimeable number, because it can be changed into a prime (423436537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8045 + ... + 30192.

Almost surely, 2^423436538 is an apocalyptic number.

423436538 is a deficient number, since it is larger than the sum of its proper divisors (321975034).

423436538 is a wasteful number, since it uses less digits than its factorization.

423436538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38366 (or 38359 counting only the distinct ones).

The product of its digits is 207360, while the sum is 38.

The square root of 423436538 is about 20577.5736664943. The cubic root of 423436538 is about 750.9242164826.

The spelling of 423436538 in words is "four hundred twenty-three million, four hundred thirty-six thousand, five hundred thirty-eight".