144971477 has 8 divisors (see below), whose sum is σ = 167544000. Its totient is φ = 122864544.

The previous prime is 144971473. The next prime is 144971479. The reversal of 144971477 is 774179441.

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

It is a cyclic number.

It is not a de Polignac number, because 144971477 - 2² = 144971473 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 (144971471) 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, 115727 + ... + 116972.

It is an arithmetic number, because the mean of its divisors is an integer number (20943000).

Almost surely, 2^144971477 is an apocalyptic number.

It is an amenable number.

144971477 is a deficient number, since it is larger than the sum of its proper divisors (22572523).

144971477 is an equidigital number, since it uses as much as digits as its factorization.

144971477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232795.

The product of its digits is 197568, while the sum is 44.

The square root of 144971477 is about 12040.4101674320. The cubic root of 144971477 is about 525.3243371542.

The spelling of 144971477 in words is "one hundred forty-four million, nine hundred seventy-one thousand, four hundred seventy-seven".