249000638 has 8 divisors (see below), whose sum is σ = 373640520. Its totient is φ = 124453800.

The previous prime is 249000637. The next prime is 249000679. The reversal of 249000638 is 836000942.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249000637) 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 3 ways as a sum of consecutive naturals, for example, 16133 + ... + 27536.

It is an arithmetic number, because the mean of its divisors is an integer number (46705065).

Almost surely, 2^249000638 is an apocalyptic number.

249000638 is a deficient number, since it is larger than the sum of its proper divisors (124639882).

249000638 is a wasteful number, since it uses less digits than its factorization.

249000638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46522.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 249000638 is about 15779.7540538501. The cubic root of 249000638 is about 629.1199924754.

The spelling of 249000638 in words is "two hundred forty-nine million, six hundred thirty-eight", and thus it is an aban number.