249481127139 has 8 divisors (see below), whose sum is σ = 332725370880. Its totient is φ = 166278817416.

The previous prime is 249481127131. The next prime is 249481127173. The reversal of 249481127139 is 931721184942.

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

It is not a de Polignac number, because 249481127139 - 2³ = 249481127131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249481127091 and 249481127100.

It is not an unprimeable number, because it can be changed into a prime (249481127131) 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, 10469619 + ... + 10493420.

It is an arithmetic number, because the mean of its divisors is an integer number (41590671360).

Almost surely, 2^249481127139 is an apocalyptic number.

249481127139 is a deficient number, since it is larger than the sum of its proper divisors (83244243741).

249481127139 is a wasteful number, since it uses less digits than its factorization.

249481127139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20967009.

The product of its digits is 870912, while the sum is 51.

The spelling of 249481127139 in words is "two hundred forty-nine billion, four hundred eighty-one million, one hundred twenty-seven thousand, one hundred thirty-nine".