249789051 has 6 divisors (see below), whose sum is σ = 360806420. Its totient is φ = 166526028.

The previous prime is 249789037. The next prime is 249789077. The reversal of 249789051 is 150987942.

It is not a de Polignac number, because 249789051 - 2⁵ = 249789019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 249788988 and 249789006.

It is not an unprimeable number, because it can be changed into a prime (249789011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13877161 + ... + 13877178.

Almost surely, 2^249789051 is an apocalyptic number.

249789051 is a deficient number, since it is larger than the sum of its proper divisors (111017369).

249789051 is a wasteful number, since it uses less digits than its factorization.

249789051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27754345 (or 27754342 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 249789051 is about 15804.7160999494. The cubic root of 249789051 is about 629.7832890307.

The spelling of 249789051 in words is "two hundred forty-nine million, seven hundred eighty-nine thousand, fifty-one".