249369081 has 32 divisors (see below), whose sum is σ = 367137792. Its totient is φ = 149610240.

The previous prime is 249369079. The next prime is 249369103. The reversal of 249369081 is 180963942.

It is not a de Polignac number, because 249369081 - 2¹ = 249369079 is a prime.

It is a super-2 number, since 2×249369081² = 124369877117569122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249369031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 460671 + ... + 461211.

It is an arithmetic number, because the mean of its divisors is an integer number (11473056).

Almost surely, 2^249369081 is an apocalyptic number.

It is an amenable number.

249369081 is a deficient number, since it is larger than the sum of its proper divisors (117768711).

249369081 is a wasteful number, since it uses less digits than its factorization.

249369081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 249369081 is about 15791.4242866184. The cubic root of 249369081 is about 629.4301397709.

The spelling of 249369081 in words is "two hundred forty-nine million, three hundred sixty-nine thousand, eighty-one".