144649490 has 16 divisors (see below), whose sum is σ = 260516952. Its totient is φ = 57826944.

The previous prime is 144649459. The next prime is 144649493. The reversal of 144649490 is 94946441.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 80120401 + 64529089 = 8951^2 + 8033^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144649493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22742 + ... + 28398.

Almost surely, 2^144649490 is an apocalyptic number.

144649490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144649490 is a deficient number, since it is larger than the sum of its proper divisors (115867462).

144649490 is a wasteful number, since it uses less digits than its factorization.

144649490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 144649490 is about 12027.0316371081. The cubic root of 144649490 is about 524.9351272828.

The spelling of 144649490 in words is "one hundred forty-four million, six hundred forty-nine thousand, four hundred ninety".