249039396 has 18 divisors (see below), whose sum is σ = 629516342. Its totient is φ = 83013120.

The previous prime is 249039379. The next prime is 249039407. The reversal of 249039396 is 693930942.

It can be written as a sum of positive squares in only one way, i.e., 247118400 + 1920996 = 15720^2 + 1386^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3458845 + ... + 3458916.

Almost surely, 2^249039396 is an apocalyptic number.

It is an amenable number.

249039396 is an abundant number, since it is smaller than the sum of its proper divisors (380476946).

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

249039396 is a wasteful number, since it uses less digits than its factorization.

249039396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6917771 (or 6917766 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The square root of 249039396 is about 15780.9820987162. The cubic root of 249039396 is about 629.1526325091.

The spelling of 249039396 in words is "two hundred forty-nine million, thirty-nine thousand, three hundred ninety-six".