144919085 has 4 divisors (see below), whose sum is σ = 173902908. Its totient is φ = 115935264.

The previous prime is 144919069. The next prime is 144919087. The reversal of 144919085 is 580919441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110965156 + 33953929 = 10534^2 + 5827^2 .

It is a cyclic number.

It is not a de Polignac number, because 144919085 - 2⁴ = 144919069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144919087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14491904 + ... + 14491913.

It is an arithmetic number, because the mean of its divisors is an integer number (43475727).

Almost surely, 2^144919085 is an apocalyptic number.

It is an amenable number.

144919085 is a deficient number, since it is larger than the sum of its proper divisors (28983823).

144919085 is an equidigital number, since it uses as much as digits as its factorization.

144919085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28983822.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 144919085 is about 12038.2342974375. The cubic root of 144919085 is about 525.2610462931.

The spelling of 144919085 in words is "one hundred forty-four million, nine hundred nineteen thousand, eighty-five".