1212479629 has 2 divisors, whose sum is σ = 1212479630. Its totient is φ = 1212479628.

The previous prime is 1212479621. The next prime is 1212479689. The reversal of 1212479629 is 9269742121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1017737604 + 194742025 = 31902^2 + 13955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212479629 - 2³ = 1212479621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212479621) 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 as a sum of consecutive naturals, namely, 606239814 + 606239815.

It is an arithmetic number, because the mean of its divisors is an integer number (606239815).

Almost surely, 2^1212479629 is an apocalyptic number.

It is an amenable number.

1212479629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212479629 is an equidigital number, since it uses as much as digits as its factorization.

1212479629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 1212479629 is about 34820.6781812187. The cubic root of 1212479629 is about 1066.3296459469.

The spelling of 1212479629 in words is "one billion, two hundred twelve million, four hundred seventy-nine thousand, six hundred twenty-nine".