248569989 has 16 divisors (see below), whose sum is σ = 352332480. Its totient is φ = 155433600.

The previous prime is 248569987. The next prime is 248570017. The reversal of 248569989 is 989965842.

It is not a de Polignac number, because 248569989 - 2¹ = 248569987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248569987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15832 + ... + 27345.

It is an arithmetic number, because the mean of its divisors is an integer number (22020780).

Almost surely, 2^248569989 is an apocalyptic number.

It is an amenable number.

248569989 is a deficient number, since it is larger than the sum of its proper divisors (103762491).

248569989 is a wasteful number, since it uses less digits than its factorization.

248569989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43300.

The product of its digits is 11197440, while the sum is 60.

The square root of 248569989 is about 15766.1025304290. The cubic root of 248569989 is about 628.7570934884.

The spelling of 248569989 in words is "two hundred forty-eight million, five hundred sixty-nine thousand, nine hundred eighty-nine".