144135477 has 8 divisors (see below), whose sum is σ = 213534080. Its totient is φ = 96090300.

The previous prime is 144135473. The next prime is 144135487. The reversal of 144135477 is 774531441.

144135477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144135477 - 2² = 144135473 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 (144135473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2669149 + ... + 2669202.

It is an arithmetic number, because the mean of its divisors is an integer number (26691760).

Almost surely, 2^144135477 is an apocalyptic number.

It is an amenable number.

144135477 is a deficient number, since it is larger than the sum of its proper divisors (69398603).

144135477 is an equidigital number, since it uses as much as digits as its factorization.

144135477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5338360 (or 5338354 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 144135477 is about 12005.6435479319. The cubic root of 144135477 is about 524.3126024042.

The spelling of 144135477 in words is "one hundred forty-four million, one hundred thirty-five thousand, four hundred seventy-seven".