431917489 has 2 divisors, whose sum is σ = 431917490. Its totient is φ = 431917488.

The previous prime is 431917471. The next prime is 431917573. The reversal of 431917489 is 984719134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427042225 + 4875264 = 20665^2 + 2208^2 .

It is a cyclic number.

It is not a de Polignac number, because 431917489 - 2⁵ = 431917457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (431911489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215958744 + 215958745.

It is an arithmetic number, because the mean of its divisors is an integer number (215958745).

Almost surely, 2^431917489 is an apocalyptic number.

It is an amenable number.

431917489 is a deficient number, since it is larger than the sum of its proper divisors (1).

431917489 is an equidigital number, since it uses as much as digits as its factorization.

431917489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 431917489 is about 20782.6246898701. The cubic root of 431917489 is about 755.9044984717.

The spelling of 431917489 in words is "four hundred thirty-one million, nine hundred seventeen thousand, four hundred eighty-nine".