423883639 has 2 divisors, whose sum is σ = 423883640. Its totient is φ = 423883638.

The previous prime is 423883631. The next prime is 423883651. The reversal of 423883639 is 936388324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423883639 - 2³ = 423883631 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423883631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211941819 + 211941820.

It is an arithmetic number, because the mean of its divisors is an integer number (211941820).

Almost surely, 2^423883639 is an apocalyptic number.

423883639 is a deficient number, since it is larger than the sum of its proper divisors (1).

423883639 is an equidigital number, since it uses as much as digits as its factorization.

423883639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 46.

The square root of 423883639 is about 20588.4345932370. The cubic root of 423883639 is about 751.1884204737.

The spelling of 423883639 in words is "four hundred twenty-three million, eight hundred eighty-three thousand, six hundred thirty-nine".