248621389 has 8 divisors (see below), whose sum is σ = 259154528. Its totient is φ = 238289040.

The previous prime is 248621371. The next prime is 248621393. The reversal of 248621389 is 983126842.

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

It is a cyclic number.

It is not a de Polignac number, because 248621389 - 2¹⁵ = 248588621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248621309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47667 + ... + 52624.

It is an arithmetic number, because the mean of its divisors is an integer number (32394316).

Almost surely, 2^248621389 is an apocalyptic number.

It is an amenable number.

248621389 is a deficient number, since it is larger than the sum of its proper divisors (10533139).

248621389 is a wasteful number, since it uses less digits than its factorization.

248621389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100395.

The product of its digits is 165888, while the sum is 43.

The square root of 248621389 is about 15767.7325256360. The cubic root of 248621389 is about 628.8004292204.

The spelling of 248621389 in words is "two hundred forty-eight million, six hundred twenty-one thousand, three hundred eighty-nine".