1212373449 has 24 divisors (see below), whose sum is σ = 2070394560. Its totient is φ = 668894688.

The previous prime is 1212373439. The next prime is 1212373453. The reversal of 1212373449 is 9443732121.

It is a happy number.

1212373449 is a `hidden beast` number, since 121 + 23 + 73 + 449 = 666.

It is not a de Polignac number, because 1212373449 - 2¹⁵ = 1212340681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212373439) 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 23 ways as a sum of consecutive naturals, for example, 329967 + ... + 333620.

It is an arithmetic number, because the mean of its divisors is an integer number (86266440).

Almost surely, 2^1212373449 is an apocalyptic number.

It is an amenable number.

1212373449 is a deficient number, since it is larger than the sum of its proper divisors (858021111).

1212373449 is a wasteful number, since it uses less digits than its factorization.

1212373449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663629 (or 663626 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 1212373449 is about 34819.1534790839. The cubic root of 1212373449 is about 1066.2985179498.

The spelling of 1212373449 in words is "one billion, two hundred twelve million, three hundred seventy-three thousand, four hundred forty-nine".