1294429999 has 2 divisors, whose sum is σ = 1294430000. Its totient is φ = 1294429998.

The previous prime is 1294429951. The next prime is 1294430003. The reversal of 1294429999 is 9999244921.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1294429999 - 2¹⁵ = 1294397231 is a prime.

It is a super-2 number, since 2×1294429999² = 3351098044622280002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1294429909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647214999 + 647215000.

It is an arithmetic number, because the mean of its divisors is an integer number (647215000).

Almost surely, 2^1294429999 is an apocalyptic number.

1294429999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1294429999 is an equidigital number, since it uses as much as digits as its factorization.

1294429999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 58.

The square root of 1294429999 is about 35978.1878226239. The cubic root of 1294429999 is about 1089.8319183634.

The spelling of 1294429999 in words is "one billion, two hundred ninety-four million, four hundred twenty-nine thousand, nine hundred ninety-nine".