1299226629 has 8 divisors (see below), whose sum is σ = 1736418592. Its totient is φ = 864092880.

The previous prime is 1299226613. The next prime is 1299226661. The reversal of 1299226629 is 9266229921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1299226629 - 2⁴ = 1299226613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299226729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513079 + ... + 515604.

It is an arithmetic number, because the mean of its divisors is an integer number (217052324).

Almost surely, 2^1299226629 is an apocalyptic number.

It is an amenable number.

1299226629 is a deficient number, since it is larger than the sum of its proper divisors (437191963).

1299226629 is a wasteful number, since it uses less digits than its factorization.

1299226629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029107.

The product of its digits is 419904, while the sum is 48.

The square root of 1299226629 is about 36044.7864329919. The cubic root of 1299226629 is about 1091.1764166415.

It can be divided in two parts, 12992 and 26629, that added together give a triangular number (39621 = T₂₈₁).

The spelling of 1299226629 in words is "one billion, two hundred ninety-nine million, two hundred twenty-six thousand, six hundred twenty-nine".