249363222887 has 4 divisors (see below), whose sum is σ = 249382934040. Its totient is φ = 249343511736.

The previous prime is 249363222859. The next prime is 249363222893. The reversal of 249363222887 is 788222363942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249363222887 is a prime.

It is a super-2 number, since 2×249363222887² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249363222827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9836588 + ... + 9861905.

It is an arithmetic number, because the mean of its divisors is an integer number (62345733510).

Almost surely, 2^249363222887 is an apocalyptic number.

249363222887 is a deficient number, since it is larger than the sum of its proper divisors (19711153).

249363222887 is a wasteful number, since it uses less digits than its factorization.

249363222887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19711152.

The product of its digits is 13934592, while the sum is 56.

The spelling of 249363222887 in words is "two hundred forty-nine billion, three hundred sixty-three million, two hundred twenty-two thousand, eight hundred eighty-seven".