1229263959 has 32 divisors (see below), whose sum is σ = 2062241280. Its totient is φ = 632707200.

The previous prime is 1229263949. The next prime is 1229263961. The reversal of 1229263959 is 9593629221.

It is a happy number.

It is not a de Polignac number, because 1229263959 - 2⁴ = 1229263943 is a prime.

It is a super-2 number, since 2×1229263959² = 3022179761792707362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229263939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 769 + ... + 49589.

It is an arithmetic number, because the mean of its divisors is an integer number (64445040).

Almost surely, 2^1229263959 is an apocalyptic number.

1229263959 is a deficient number, since it is larger than the sum of its proper divisors (832977321).

1229263959 is a wasteful number, since it uses less digits than its factorization.

1229263959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48951.

The product of its digits is 524880, while the sum is 48.

The square root of 1229263959 is about 35060.8607852118. The cubic root of 1229263959 is about 1071.2275076143.

The spelling of 1229263959 in words is "one billion, two hundred twenty-nine million, two hundred sixty-three thousand, nine hundred fifty-nine".