249027144689 has 8 divisors (see below), whose sum is σ = 254392652160. Its totient is φ = 243664431376.

The previous prime is 249027144679. The next prime is 249027144697. The reversal of 249027144689 is 986441720942.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249027144689 is a prime.

It is a super-2 number, since 2×249027144689² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249027144659) 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, 517874 + ... + 875355.

It is an arithmetic number, because the mean of its divisors is an integer number (31799081520).

Almost surely, 2^249027144689 is an apocalyptic number.

It is an amenable number.

249027144689 is a deficient number, since it is larger than the sum of its proper divisors (5365507471).

249027144689 is a wasteful number, since it uses less digits than its factorization.

249027144689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397079.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 249027144689 in words is "two hundred forty-nine billion, twenty-seven million, one hundred forty-four thousand, six hundred eighty-nine".