249649653 has 16 divisors (see below), whose sum is σ = 363470400. Its totient is φ = 151159680.

The previous prime is 249649651. The next prime is 249649667. The reversal of 249649653 is 356946942.

It is not a de Polignac number, because 249649653 - 2¹ = 249649651 is a prime.

It is a super-3 number, since 3×249649653³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249649651) 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 15 ways as a sum of consecutive naturals, for example, 39603 + ... + 45471.

It is an arithmetic number, because the mean of its divisors is an integer number (22716900).

Almost surely, 2^249649653 is an apocalyptic number.

It is an amenable number.

249649653 is a deficient number, since it is larger than the sum of its proper divisors (113820747).

249649653 is a wasteful number, since it uses less digits than its factorization.

249649653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7172.

The product of its digits is 1399680, while the sum is 48.

The square root of 249649653 is about 15800.3054717306. The cubic root of 249649653 is about 629.6661143367. Note that the first 3 decimals are identical.

The spelling of 249649653 in words is "two hundred forty-nine million, six hundred forty-nine thousand, six hundred fifty-three".