144840087 has 12 divisors (see below), whose sum is σ = 239101200. Its totient is φ = 82765728.

The previous prime is 144840083. The next prime is 144840107. The reversal of 144840087 is 780048441.

It is a happy number.

It is not a de Polignac number, because 144840087 - 2² = 144840083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144840083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1149462 + ... + 1149587.

It is an arithmetic number, because the mean of its divisors is an integer number (19925100).

Almost surely, 2^144840087 is an apocalyptic number.

144840087 is a deficient number, since it is larger than the sum of its proper divisors (94261113).

144840087 is a wasteful number, since it uses less digits than its factorization.

144840087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299062 (or 2299059 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 144840087 is about 12034.9527211369. The cubic root of 144840087 is about 525.1655858637.

The spelling of 144840087 in words is "one hundred forty-four million, eight hundred forty thousand, eighty-seven".