144444690 has 48 divisors (see below), whose sum is σ = 404448408. Its totient is φ = 35555328.

The previous prime is 144444667. The next prime is 144444701. The reversal of 144444690 is 96444441.

It can be written as a sum of positive squares in 4 ways, for example, as 130850721 + 13593969 = 11439^2 + 3687^2 .

It is a super-2 number, since 2×144444690² = 41728536938392200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60559 + ... + 62898.

Almost surely, 2^144444690 is an apocalyptic number.

144444690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144444690 is an abundant number, since it is smaller than the sum of its proper divisors (260003718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144444690 is a wasteful number, since it uses less digits than its factorization.

144444690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123483 (or 123480 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 144444690 is about 12018.5144672709. The cubic root of 144444690 is about 524.6872695329.

The spelling of 144444690 in words is "one hundred forty-four million, four hundred forty-four thousand, six hundred ninety".