249069436 has 48 divisors (see below), whose sum is σ = 545352192. Its totient is φ = 96696000.

The previous prime is 249069421. The next prime is 249069451. The reversal of 249069436 is 634960942.

It is an interprime number because it is at equal distance from previous prime (249069421) and next prime (249069451).

It is a junction number, because it is equal to n+sod(n) for n = 249069392 and 249069401.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 96361 + ... + 98911.

It is an arithmetic number, because the mean of its divisors is an integer number (11361504).

Almost surely, 2^249069436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249069436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272676096).

249069436 is an abundant number, since it is smaller than the sum of its proper divisors (296282756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249069436 is a wasteful number, since it uses less digits than its factorization.

249069436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890 (or 2888 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 249069436 is about 15781.9338485497. The cubic root of 249069436 is about 629.1779283532.

The spelling of 249069436 in words is "two hundred forty-nine million, sixty-nine thousand, four hundred thirty-six".