144622809 has 24 divisors (see below), whose sum is σ = 212027400. Its totient is φ = 94982400.

The previous prime is 144622799. The next prime is 144622831. The reversal of 144622809 is 908226441.

144622809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 73051209 + 71571600 = 8547^2 + 8460^2 .

It is not a de Polignac number, because 144622809 - 2¹⁵ = 144590041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144622879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353397 + ... + 353805.

It is an arithmetic number, because the mean of its divisors is an integer number (8834475).

Almost surely, 2^144622809 is an apocalyptic number.

It is an amenable number.

144622809 is a deficient number, since it is larger than the sum of its proper divisors (67404591).

144622809 is a wasteful number, since it uses less digits than its factorization.

144622809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 144622809 is about 12025.9223762670. The cubic root of 144622809 is about 524.9028500510.

It can be divided in two parts, 14462 and 2809, that added together give a palindrome (17271).

The spelling of 144622809 in words is "one hundred forty-four million, six hundred twenty-two thousand, eight hundred nine".