429664999 has 2 divisors, whose sum is σ = 429665000. Its totient is φ = 429664998.

The previous prime is 429664931. The next prime is 429665039. The reversal of 429664999 is 999466924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 429664999 - 2¹⁷ = 429533927 is a prime.

It is a super-2 number, since 2×429664999² = 369224022731340002, which contains 22 as substring.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (429604999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214832499 + 214832500.

It is an arithmetic number, because the mean of its divisors is an integer number (214832500).

Almost surely, 2^429664999 is an apocalyptic number.

429664999 is a deficient number, since it is larger than the sum of its proper divisors (1).

429664999 is an equidigital number, since it uses as much as digits as its factorization.

429664999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7558272, while the sum is 58.

The square root of 429664999 is about 20728.3621880746. The cubic root of 429664999 is about 754.5881700610.

The spelling of 429664999 in words is "four hundred twenty-nine million, six hundred sixty-four thousand, nine hundred ninety-nine".