144431477 has 2 divisors, whose sum is σ = 144431478. Its totient is φ = 144431476.

The previous prime is 144431437. The next prime is 144431501. The reversal of 144431477 is 774134441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104980516 + 39450961 = 10246^2 + 6281^2 .

It is a cyclic number.

It is not a de Polignac number, because 144431477 - 2¹⁴ = 144415093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144431437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72215738 + 72215739.

It is an arithmetic number, because the mean of its divisors is an integer number (72215739).

Almost surely, 2^144431477 is an apocalyptic number.

It is an amenable number.

144431477 is a deficient number, since it is larger than the sum of its proper divisors (1).

144431477 is an equidigital number, since it uses as much as digits as its factorization.

144431477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 35.

The square root of 144431477 is about 12017.9647611399. The cubic root of 144431477 is about 524.6712705502.

The spelling of 144431477 in words is "one hundred forty-four million, four hundred thirty-one thousand, four hundred seventy-seven".