144477693 has 6 divisors (see below), whose sum is σ = 208690014. Its totient is φ = 96318456.

The previous prime is 144477667. The next prime is 144477719. The reversal of 144477693 is 396774441.

It is an interprime number because it is at equal distance from previous prime (144477667) and next prime (144477719).

It can be written as a sum of positive squares in only one way, i.e., 144432324 + 45369 = 12018^2 + 213^2 .

It is not a de Polignac number, because 144477693 - 2¹⁰ = 144476669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144477643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8026530 + ... + 8026547.

It is an arithmetic number, because the mean of its divisors is an integer number (34781669).

Almost surely, 2^144477693 is an apocalyptic number.

It is an amenable number.

144477693 is a deficient number, since it is larger than the sum of its proper divisors (64212321).

144477693 is a wasteful number, since it uses less digits than its factorization.

144477693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16053083 (or 16053080 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 144477693 is about 12019.8873954792. The cubic root of 144477693 is about 524.7272270080.

The spelling of 144477693 in words is "one hundred forty-four million, four hundred seventy-seven thousand, six hundred ninety-three".