249779722238 has 8 divisors (see below), whose sum is σ = 376127442432. Its totient is φ = 124403908096.

The previous prime is 249779722139. The next prime is 249779722261. The reversal of 249779722238 is 832227977942.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242975870 + ... + 242976897.

It is an arithmetic number, because the mean of its divisors is an integer number (47015930304).

Almost surely, 2^249779722238 is an apocalyptic number.

249779722238 is a deficient number, since it is larger than the sum of its proper divisors (126347720194).

249779722238 is a wasteful number, since it uses less digits than its factorization.

249779722238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485953026.

The product of its digits is 42674688, while the sum is 62.

The spelling of 249779722238 in words is "two hundred forty-nine billion, seven hundred seventy-nine million, seven hundred twenty-two thousand, two hundred thirty-eight".