144689904 has 60 divisors (see below), whose sum is σ = 405817776. Its totient is φ = 48124416.

The previous prime is 144689899. The next prime is 144689911. The reversal of 144689904 is 409986441.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 144689904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92392 + ... + 93944.

Almost surely, 2^144689904 is an apocalyptic number.

It is an amenable number.

144689904 is an abundant number, since it is smaller than the sum of its proper divisors (261127872).

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

144689904 is a wasteful number, since it uses less digits than its factorization.

144689904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214 (or 2205 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 144689904 is about 12028.7116517107. The cubic root of 144689904 is about 524.9840103974.

The spelling of 144689904 in words is "one hundred forty-four million, six hundred eighty-nine thousand, nine hundred four".