249139148529 has 8 divisors (see below), whose sum is σ = 332362327360. Its totient is φ = 166004367696.

The previous prime is 249139148507. The next prime is 249139148569. The reversal of 249139148529 is 925841931942.

It is a happy number.

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

It is not a de Polignac number, because 249139148529 - 2¹¹ = 249139146481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249139148569) 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, 22092922 + ... + 22104195.

It is an arithmetic number, because the mean of its divisors is an integer number (41545290920).

Almost surely, 2^249139148529 is an apocalyptic number.

It is an amenable number.

249139148529 is a deficient number, since it is larger than the sum of its proper divisors (83223178831).

249139148529 is a wasteful number, since it uses less digits than its factorization.

249139148529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44198999.

The product of its digits is 5598720, while the sum is 57.

The spelling of 249139148529 in words is "two hundred forty-nine billion, one hundred thirty-nine million, one hundred forty-eight thousand, five hundred twenty-nine".