144869377 has 4 divisors (see below), whose sum is σ = 145287216. Its totient is φ = 144451540.

The previous prime is 144869371. The next prime is 144869383. The reversal of 144869377 is 773968441.

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 an interprime number because it is at equal distance from previous prime (144869371) and next prime (144869383).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144869377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144869377.

It is not an unprimeable number, because it can be changed into a prime (144869371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208399 + ... + 209092.

It is an arithmetic number, because the mean of its divisors is an integer number (36321804).

Almost surely, 2^144869377 is an apocalyptic number.

It is an amenable number.

144869377 is a deficient number, since it is larger than the sum of its proper divisors (417839).

144869377 is an equidigital number, since it uses as much as digits as its factorization.

144869377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417838.

The product of its digits is 1016064, while the sum is 49.

The square root of 144869377 is about 12036.1695318735. The cubic root of 144869377 is about 525.2009836682.

The spelling of 144869377 in words is "one hundred forty-four million, eight hundred sixty-nine thousand, three hundred seventy-seven".