1229871297 has 8 divisors (see below), whose sum is σ = 1644156640. Its totient is φ = 817750080.

The previous prime is 1229871287. The next prime is 1229871317. The reversal of 1229871297 is 7921789221.

It is a happy number.

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

It is not a de Polignac number, because 1229871297 - 2⁶ = 1229871233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1229871217) 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 7 ways as a sum of consecutive naturals, for example, 539704 + ... + 541977.

It is an arithmetic number, because the mean of its divisors is an integer number (205519580).

Almost surely, 2^1229871297 is an apocalyptic number.

It is an amenable number.

1229871297 is a deficient number, since it is larger than the sum of its proper divisors (414285343).

1229871297 is a wasteful number, since it uses less digits than its factorization.

1229871297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082063.

The product of its digits is 254016, while the sum is 48.

The square root of 1229871297 is about 35069.5209120398. The cubic root of 1229871297 is about 1071.4038977353.

The spelling of 1229871297 in words is "one billion, two hundred twenty-nine million, eight hundred seventy-one thousand, two hundred ninety-seven".