144434139 has 4 divisors (see below), whose sum is σ = 192578856. Its totient is φ = 96289424.

The previous prime is 144434131. The next prime is 144434189. The reversal of 144434139 is 931434441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144434139 - 2³ = 144434131 is a prime.

It is a super-2 number, since 2×144434139² = 41722441017342642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144434131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24072354 + ... + 24072359.

It is an arithmetic number, because the mean of its divisors is an integer number (48144714).

Almost surely, 2^144434139 is an apocalyptic number.

144434139 is a deficient number, since it is larger than the sum of its proper divisors (48144717).

144434139 is an equidigital number, since it uses as much as digits as its factorization.

144434139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48144716.

The product of its digits is 20736, while the sum is 33.

The square root of 144434139 is about 12018.0755114952. The cubic root of 144434139 is about 524.6744939158.

The spelling of 144434139 in words is "one hundred forty-four million, four hundred thirty-four thousand, one hundred thirty-nine".