249193143 has 12 divisors (see below), whose sum is σ = 372357960. Its totient is φ = 160400016.

The previous prime is 249193129. The next prime is 249193169. The reversal of 249193143 is 341391942.

It is not a de Polignac number, because 249193143 - 2⁸ = 249192887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249193098 and 249193107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249193183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 477121 + ... + 477642.

It is an arithmetic number, because the mean of its divisors is an integer number (31029830).

Almost surely, 2^249193143 is an apocalyptic number.

249193143 is a deficient number, since it is larger than the sum of its proper divisors (123164817).

249193143 is a wasteful number, since it uses less digits than its factorization.

249193143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954798 (or 954795 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 249193143 is about 15785.8526218890. The cubic root of 249193143 is about 629.2820771303.

The spelling of 249193143 in words is "two hundred forty-nine million, one hundred ninety-three thousand, one hundred forty-three".