429399931 has 2 divisors, whose sum is σ = 429399932. Its totient is φ = 429399930.

The previous prime is 429399907. The next prime is 429399937. The reversal of 429399931 is 139993924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 429399931 - 2¹⁵ = 429367163 is a prime.

It is a super-2 number, since 2×429399931² = 368768601485609522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (429399937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214699965 + 214699966.

It is an arithmetic number, because the mean of its divisors is an integer number (214699966).

Almost surely, 2^429399931 is an apocalyptic number.

429399931 is a deficient number, since it is larger than the sum of its proper divisors (1).

429399931 is an equidigital number, since it uses as much as digits as its factorization.

429399931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 49.

The square root of 429399931 is about 20721.9673535116. The cubic root of 429399931 is about 754.4329651742.

The spelling of 429399931 in words is "four hundred twenty-nine million, three hundred ninety-nine thousand, nine hundred thirty-one".