672431429 has 2 divisors, whose sum is σ = 672431430. Its totient is φ = 672431428.

The previous prime is 672431423. The next prime is 672431453. The reversal of 672431429 is 924134276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623850529 + 48580900 = 24977^2 + 6970^2 .

It is a cyclic number.

It is not a de Polignac number, because 672431429 - 2¹⁶ = 672365893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 672431392 and 672431401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672431423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336215714 + 336215715.

It is an arithmetic number, because the mean of its divisors is an integer number (336215715).

Almost surely, 2^672431429 is an apocalyptic number.

It is an amenable number.

672431429 is a deficient number, since it is larger than the sum of its proper divisors (1).

672431429 is an equidigital number, since it uses as much as digits as its factorization.

672431429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 672431429 is about 25931.2828259614. The cubic root of 672431429 is about 876.0912334696.

The spelling of 672431429 in words is "six hundred seventy-two million, four hundred thirty-one thousand, four hundred twenty-nine".