249138033 has 8 divisors (see below), whose sum is σ = 332322528. Its totient is φ = 166022784.

The previous prime is 249138011. The next prime is 249138083. The reversal of 249138033 is 330831942.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-249138033 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 249137985 and 249138003.

It is not an unprimeable number, because it can be changed into a prime (249138083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8235 + ... + 23792.

It is an arithmetic number, because the mean of its divisors is an integer number (41540316).

Almost surely, 2^249138033 is an apocalyptic number.

It is an amenable number.

249138033 is a deficient number, since it is larger than the sum of its proper divisors (83184495).

249138033 is a wasteful number, since it uses less digits than its factorization.

249138033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34623.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 249138033 is about 15784.1069750556. The cubic root of 249138033 is about 629.2356843447.

Adding to 249138033 its reverse (330831942), we get a palindrome (579969975).

The spelling of 249138033 in words is "two hundred forty-nine million, one hundred thirty-eight thousand, thirty-three".