248640383 has 4 divisors (see below), whose sum is σ = 248685528. Its totient is φ = 248595240.

The previous prime is 248640307. The next prime is 248640389. The reversal of 248640383 is 383046842.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383046842 = 2 ⋅191523421.

It is a cyclic number.

It is not a de Polignac number, because 248640383 - 2¹² = 248636287 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 (248640389) 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, 12941 + ... + 25782.

It is an arithmetic number, because the mean of its divisors is an integer number (62171382).

Almost surely, 2^248640383 is an apocalyptic number.

248640383 is a deficient number, since it is larger than the sum of its proper divisors (45145).

248640383 is an equidigital number, since it uses as much as digits as its factorization.

248640383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45144.

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 248640383 is about 15768.3348201387. The cubic root of 248640383 is about 628.8164416953.

The spelling of 248640383 in words is "two hundred forty-eight million, six hundred forty thousand, three hundred eighty-three".