144444290 has 8 divisors (see below), whose sum is σ = 259999740. Its totient is φ = 57777712.

The previous prime is 144444211. The next prime is 144444299. The reversal of 144444290 is 92444441.

It can be written as a sum of positive squares in 2 ways, for example, as 142730809 + 1713481 = 11947^2 + 1309^2 .

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

It is not an unprimeable number, because it can be changed into a prime (144444299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7222205 + ... + 7222224.

Almost surely, 2^144444290 is an apocalyptic number.

144444290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144444290 is a deficient number, since it is larger than the sum of its proper divisors (115555450).

144444290 is a wasteful number, since it uses less digits than its factorization.

144444290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14444436.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 144444290 is about 12018.4978262676. The cubic root of 144444290 is about 524.6867852066.

The spelling of 144444290 in words is "one hundred forty-four million, four hundred forty-four thousand, two hundred ninety".