144440402 has 16 divisors (see below), whose sum is σ = 220526592. Its totient is φ = 70943040.

The previous prime is 144440399. The next prime is 144440431. The reversal of 144440402 is 204044441.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23402 + ... + 28922.

It is an arithmetic number, because the mean of its divisors is an integer number (13782912).

Almost surely, 2^144440402 is an apocalyptic number.

144440402 is a deficient number, since it is larger than the sum of its proper divisors (76086190).

144440402 is a wasteful number, since it uses less digits than its factorization.

144440402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5753.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 144440402 is about 12018.3360745155. The cubic root of 144440402 is about 524.6820775080.

Adding to 144440402 its reverse (204044441), we get a palindrome (348484843).

The spelling of 144440402 in words is "one hundred forty-four million, four hundred forty thousand, four hundred two".