144946985 has 4 divisors (see below), whose sum is σ = 173936388. Its totient is φ = 115957584.

The previous prime is 144946973. The next prime is 144946999. The reversal of 144946985 is 589649441.

144946985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589649441 = 433 ⋅1361777.

It can be written as a sum of positive squares in 2 ways, for example, as 16192576 + 128754409 = 4024^2 + 11347^2 .

It is a cyclic number.

It is not a de Polignac number, because 144946985 - 2⁴ = 144946969 is a prime.

It is a super-3 number, since 3×144946985³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian 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, 14494694 + ... + 14494703.

It is an arithmetic number, because the mean of its divisors is an integer number (43484097).

Almost surely, 2^144946985 is an apocalyptic number.

It is an amenable number.

144946985 is a deficient number, since it is larger than the sum of its proper divisors (28989403).

144946985 is an equidigital number, since it uses as much as digits as its factorization.

144946985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28989402.

The product of its digits is 1244160, while the sum is 50.

The square root of 144946985 is about 12039.3930494855. The cubic root of 144946985 is about 525.2947520971.

The spelling of 144946985 in words is "one hundred forty-four million, nine hundred forty-six thousand, nine hundred eighty-five".