144651249 has 24 divisors (see below), whose sum is σ = 221686920. Its totient is φ = 90574848.

The previous prime is 144651233. The next prime is 144651259. The reversal of 144651249 is 942156441.

It can be written as a sum of positive squares in 4 ways, for example, as 3873024 + 140778225 = 1968^2 + 11865^2 .

It is not a de Polignac number, because 144651249 - 2⁴ = 144651233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144651259) 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, 142857 + ... + 143865.

It is an arithmetic number, because the mean of its divisors is an integer number (9236955).

Almost surely, 2^144651249 is an apocalyptic number.

It is an amenable number.

144651249 is a deficient number, since it is larger than the sum of its proper divisors (77035671).

144651249 is a wasteful number, since it uses less digits than its factorization.

144651249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969 (or 1966 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 144651249 is about 12027.1047638241. The cubic root of 144651249 is about 524.9372550864.

It can be divided in two parts, 144 and 651249, that multiplied together give a square (93779856 = 9684²).

The spelling of 144651249 in words is "one hundred forty-four million, six hundred fifty-one thousand, two hundred forty-nine".