144099640 has 16 divisors (see below), whose sum is σ = 324224280. Its totient is φ = 57639840.

The previous prime is 144099619. The next prime is 144099689. The reversal of 144099640 is 46990441.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 144099640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1801206 + ... + 1801285.

Almost surely, 2^144099640 is an apocalyptic number.

144099640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144099640 is an abundant number, since it is smaller than the sum of its proper divisors (180124640).

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

144099640 is a wasteful number, since it uses less digits than its factorization.

144099640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602502 (or 3602498 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 144099640 is about 12004.1509487344. The cubic root of 144099640 is about 524.2691447984.

The spelling of 144099640 in words is "one hundred forty-four million, ninety-nine thousand, six hundred forty".