144381699 has 48 divisors (see below), whose sum is σ = 264985344. Its totient is φ = 73569600.

The previous prime is 144381689. The next prime is 144381701. The reversal of 144381699 is 996183441.

It is not a de Polignac number, because 144381699 - 2⁴ = 144381683 is a prime.

It is a super-2 number, since 2×144381699² = 41692150012253202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144381689) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34764 + ... + 38694.

It is an arithmetic number, because the mean of its divisors is an integer number (5520528).

Almost surely, 2^144381699 is an apocalyptic number.

144381699 is a deficient number, since it is larger than the sum of its proper divisors (120603645).

144381699 is a wasteful number, since it uses less digits than its factorization.

144381699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008 (or 4005 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 144381699 is about 12015.8935997287. The cubic root of 144381699 is about 524.6109880134.

The spelling of 144381699 in words is "one hundred forty-four million, three hundred eighty-one thousand, six hundred ninety-nine".