423737689 has 2 divisors, whose sum is σ = 423737690. Its totient is φ = 423737688.

The previous prime is 423737663. The next prime is 423737701. The reversal of 423737689 is 986737324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257121225 + 166616464 = 16035^2 + 12908^2 .

It is a cyclic number.

It is not a de Polignac number, because 423737689 - 2¹³ = 423729497 is a prime.

It is not a weakly prime, because it can be changed into another prime (423731689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211868844 + 211868845.

It is an arithmetic number, because the mean of its divisors is an integer number (211868845).

Almost surely, 2^423737689 is an apocalyptic number.

It is an amenable number.

423737689 is a deficient number, since it is larger than the sum of its proper divisors (1).

423737689 is an equidigital number, since it uses as much as digits as its factorization.

423737689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 49.

The square root of 423737689 is about 20584.8898223916. The cubic root of 423737689 is about 751.1021951314.

The spelling of 423737689 in words is "four hundred twenty-three million, seven hundred thirty-seven thousand, six hundred eighty-nine".