423899087 has 2 divisors, whose sum is σ = 423899088. Its totient is φ = 423899086.

The previous prime is 423899083. The next prime is 423899089. The reversal of 423899087 is 780998324.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423899087 - 2² = 423899083 is a prime.

Together with 423899089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423899081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211949543 + 211949544.

It is an arithmetic number, because the mean of its divisors is an integer number (211949544).

Almost surely, 2^423899087 is an apocalyptic number.

423899087 is a deficient number, since it is larger than the sum of its proper divisors (1).

423899087 is an equidigital number, since it uses as much as digits as its factorization.

423899087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 423899087 is about 20588.8097519016. The cubic root of 423899087 is about 751.1975457907.

The spelling of 423899087 in words is "four hundred twenty-three million, eight hundred ninety-nine thousand, eighty-seven".