1214399139 has 8 divisors (see below), whose sum is σ = 1639695360. Its totient is φ = 799351176.

The previous prime is 1214399111. The next prime is 1214399167. The reversal of 1214399139 is 9319934121.

It is an interprime number because it is at equal distance from previous prime (1214399111) and next prime (1214399167).

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

It is not a de Polignac number, because 1214399139 - 2⁵ = 1214399107 is a prime.

It is a super-4 number, since 4×1214399139⁴ (a number of 37 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1214399139.

It is not an unprimeable number, because it can be changed into a prime (1214399189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2561787 + ... + 2562260.

It is an arithmetic number, because the mean of its divisors is an integer number (204961920).

Almost surely, 2^1214399139 is an apocalyptic number.

1214399139 is a deficient number, since it is larger than the sum of its proper divisors (425296221).

1214399139 is an equidigital number, since it uses as much as digits as its factorization.

1214399139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124129.

The product of its digits is 52488, while the sum is 42.

The square root of 1214399139 is about 34848.2300698328. The cubic root of 1214399139 is about 1066.8920612341.

The spelling of 1214399139 in words is "one billion, two hundred fourteen million, three hundred ninety-nine thousand, one hundred thirty-nine".