248890909 has 4 divisors (see below), whose sum is σ = 256919680. Its totient is φ = 240862140.

The previous prime is 248890907. The next prime is 248890913. The reversal of 248890909 is 909098842.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 909098842 = 2 ⋅454549421.

It is a cyclic number.

It is not a de Polignac number, because 248890909 - 2¹ = 248890907 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 (248890907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4014339 + ... + 4014400.

It is an arithmetic number, because the mean of its divisors is an integer number (64229920).

Almost surely, 2^248890909 is an apocalyptic number.

It is an amenable number.

248890909 is a deficient number, since it is larger than the sum of its proper divisors (8028771).

248890909 is an equidigital number, since it uses as much as digits as its factorization.

248890909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8028770.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 248890909 is about 15776.2767787587. The cubic root of 248890909 is about 629.0275658708.

The spelling of 248890909 in words is "two hundred forty-eight million, eight hundred ninety thousand, nine hundred nine".