423975787 has 2 divisors, whose sum is σ = 423975788. Its totient is φ = 423975786.

The previous prime is 423975781. The next prime is 423975821. The reversal of 423975787 is 787579324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423975787 - 2⁷ = 423975659 is a prime.

It is not a weakly prime, because it can be changed into another prime (423975781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211987893 + 211987894.

It is an arithmetic number, because the mean of its divisors is an integer number (211987894).

Almost surely, 2^423975787 is an apocalyptic number.

423975787 is a deficient number, since it is larger than the sum of its proper divisors (1).

423975787 is an equidigital number, since it uses as much as digits as its factorization.

423975787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 52.

The square root of 423975787 is about 20590.6723299653. The cubic root of 423975787 is about 751.2428501086.

It can be divided in two parts, 42397 and 5787, that added together give a palindrome (48184).

The spelling of 423975787 in words is "four hundred twenty-three million, nine hundred seventy-five thousand, seven hundred eighty-seven".