429947137 has 2 divisors, whose sum is σ = 429947138. Its totient is φ = 429947136.

The previous prime is 429947123. The next prime is 429947173. The reversal of 429947137 is 731749924.

Together with next prime (429947173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250145856 + 179801281 = 15816^2 + 13409^2 .

It is a cyclic number.

It is not a de Polignac number, because 429947137 - 2⁷ = 429947009 is a prime.

It is a super-2 number, since 2×429947137² = 369709081228993538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (429947537) 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, 214973568 + 214973569.

It is an arithmetic number, because the mean of its divisors is an integer number (214973569).

Almost surely, 2^429947137 is an apocalyptic number.

It is an amenable number.

429947137 is a deficient number, since it is larger than the sum of its proper divisors (1).

429947137 is an equidigital number, since it uses as much as digits as its factorization.

429947137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 46.

The square root of 429947137 is about 20735.1666740347. The cubic root of 429947137 is about 754.7532998055.

The spelling of 429947137 in words is "four hundred twenty-nine million, nine hundred forty-seven thousand, one hundred thirty-seven".