144531979 has 2 divisors, whose sum is σ = 144531980. Its totient is φ = 144531978.

The previous prime is 144531949. The next prime is 144531983. The reversal of 144531979 is 979135441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144531979 - 2¹⁹ = 144007691 is a prime.

It is not a weakly prime, because it can be changed into another prime (144531949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72265989 + 72265990.

It is an arithmetic number, because the mean of its divisors is an integer number (72265990).

Almost surely, 2^144531979 is an apocalyptic number.

144531979 is a deficient number, since it is larger than the sum of its proper divisors (1).

144531979 is an equidigital number, since it uses as much as digits as its factorization.

144531979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 43.

The square root of 144531979 is about 12022.1453576306. The cubic root of 144531979 is about 524.7929390560.

The spelling of 144531979 in words is "one hundred forty-four million, five hundred thirty-one thousand, nine hundred seventy-nine".