249353137 has 4 divisors (see below), whose sum is σ = 272021616. Its totient is φ = 226684660.

The previous prime is 249353123. The next prime is 249353141. The reversal of 249353137 is 731353942.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 249353137 - 2¹⁵ = 249320369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 249353096 and 249353105.

It is not an unprimeable number, because it can be changed into a prime (249353537) 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 3 ways as a sum of consecutive naturals, for example, 11334223 + ... + 11334244.

It is an arithmetic number, because the mean of its divisors is an integer number (68005404).

Almost surely, 2^249353137 is an apocalyptic number.

It is an amenable number.

249353137 is a deficient number, since it is larger than the sum of its proper divisors (22668479).

249353137 is a wasteful number, since it uses less digits than its factorization.

249353137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22668478.

The product of its digits is 68040, while the sum is 37.

The square root of 249353137 is about 15790.9194475813. The cubic root of 249353137 is about 629.4167247851.

The spelling of 249353137 in words is "two hundred forty-nine million, three hundred fifty-three thousand, one hundred thirty-seven".