431929 has 2 divisors, whose sum is σ = 431930. Its totient is φ = 431928.

The previous prime is 431911. The next prime is 431933. The reversal of 431929 is 929134.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308025 + 123904 = 555^2 + 352^2 .

It is a cyclic number.

It is not a de Polignac number, because 431929 - 2⁷ = 431801 is a prime.

It is a super-2 number, since 2×431929² = 373125322082, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 431897 and 431906.

It is not a weakly prime, because it can be changed into another prime (431029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215964 + 215965.

It is an arithmetic number, because the mean of its divisors is an integer number (215965).

2⁴³¹⁹²⁹ is an apocalyptic number.

It is an amenable number.

431929 is a deficient number, since it is larger than the sum of its proper divisors (1).

431929 is an equidigital number, since it uses as much as digits as its factorization.

431929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 431929 is about 657.2130552568. The cubic root of 431929 is about 75.5911213596.

The spelling of 431929 in words is "four hundred thirty-one thousand, nine hundred twenty-nine".