1212762979 has 2 divisors, whose sum is σ = 1212762980. Its totient is φ = 1212762978.

The previous prime is 1212762973. The next prime is 1212763003. The reversal of 1212762979 is 9792672121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212762979 - 2¹⁷ = 1212631907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212762973) 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, 606381489 + 606381490.

It is an arithmetic number, because the mean of its divisors is an integer number (606381490).

Almost surely, 2^1212762979 is an apocalyptic number.

1212762979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212762979 is an equidigital number, since it uses as much as digits as its factorization.

1212762979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 46.

The square root of 1212762979 is about 34824.7466466018. The cubic root of 1212762979 is about 1066.4127046542.

The spelling of 1212762979 in words is "one billion, two hundred twelve million, seven hundred sixty-two thousand, nine hundred seventy-nine".