429661957 has 2 divisors, whose sum is σ = 429661958. Its totient is φ = 429661956.

The previous prime is 429661943. The next prime is 429661987. The reversal of 429661957 is 759166924.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 428738436 + 923521 = 20706^2 + 961^2 .

It is a cyclic number.

It is not a de Polignac number, because 429661957 - 2¹⁹ = 429137669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 429661957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (429661987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214830978 + 214830979.

It is an arithmetic number, because the mean of its divisors is an integer number (214830979).

Almost surely, 2^429661957 is an apocalyptic number.

It is an amenable number.

429661957 is a deficient number, since it is larger than the sum of its proper divisors (1).

429661957 is an equidigital number, since it uses as much as digits as its factorization.

429661957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 429661957 is about 20728.2888102226. The cubic root of 429661957 is about 754.5863892452.

The spelling of 429661957 in words is "four hundred twenty-nine million, six hundred sixty-one thousand, nine hundred fifty-seven".