249844653 has 12 divisors (see below), whose sum is σ = 376577760. Its totient is φ = 159321096.

The previous prime is 249844643. The next prime is 249844681. The reversal of 249844653 is 356448942.

It is not a de Polignac number, because 249844653 - 2⁹ = 249844141 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 249844599 and 249844608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249844613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 603283 + ... + 603696.

It is an arithmetic number, because the mean of its divisors is an integer number (31381480).

Almost surely, 2^249844653 is an apocalyptic number.

249844653 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

249844653 is a deficient number, since it is larger than the sum of its proper divisors (126733107).

249844653 is a wasteful number, since it uses less digits than its factorization.

249844653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207008 (or 1207005 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 249844653 is about 15806.4750339853. The cubic root of 249844653 is about 629.8300146076.

The spelling of 249844653 in words is "two hundred forty-nine million, eight hundred forty-four thousand, six hundred fifty-three".