249223144 has 16 divisors (see below), whose sum is σ = 467594820. Its totient is φ = 124531200.

The previous prime is 249223127. The next prime is 249223153. The reversal of 249223144 is 441322942.

It can be written as a sum of positive squares in 2 ways, for example, as 247432900 + 1790244 = 15730^2 + 1338^2 .

It is a super-2 number, since 2×249223144² = 124224351010489472, which contains 22 as substring.

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, 4344 + ... + 22744.

Almost surely, 2^249223144 is an apocalyptic number.

It is an amenable number.

249223144 is a deficient number, since it is larger than the sum of its proper divisors (218371676).

249223144 is a wasteful number, since it uses less digits than its factorization.

249223144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20100 (or 20096 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 249223144 is about 15786.8028428811. The cubic root of 249223144 is about 629.3073297433.

The spelling of 249223144 in words is "two hundred forty-nine million, two hundred twenty-three thousand, one hundred forty-four".