1214309973 has 4 divisors (see below), whose sum is σ = 1619079968. Its totient is φ = 809539980.

The previous prime is 1214309933. The next prime is 1214309989. The reversal of 1214309973 is 3799034121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1214309973 - 2⁸ = 1214309717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214309933) 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 3 ways as a sum of consecutive naturals, for example, 202384993 + ... + 202384998.

It is an arithmetic number, because the mean of its divisors is an integer number (404769992).

Almost surely, 2^1214309973 is an apocalyptic number.

It is an amenable number.

1214309973 is a deficient number, since it is larger than the sum of its proper divisors (404769995).

1214309973 is an equidigital number, since it uses as much as digits as its factorization.

1214309973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404769994.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 1214309973 is about 34846.9506987340. The cubic root of 1214309973 is about 1066.8659487799.

The spelling of 1214309973 in words is "one billion, two hundred fourteen million, three hundred nine thousand, nine hundred seventy-three".