248724739 has 4 divisors (see below), whose sum is σ = 263355624. Its totient is φ = 234093856.

The previous prime is 248724731. The next prime is 248724757. The reversal of 248724739 is 937427842.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 248724739 - 2³ = 248724731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248724731) 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, 7315417 + ... + 7315450.

It is an arithmetic number, because the mean of its divisors is an integer number (65838906).

Almost surely, 2^248724739 is an apocalyptic number.

248724739 is a deficient number, since it is larger than the sum of its proper divisors (14630885).

248724739 is a wasteful number, since it uses less digits than its factorization.

248724739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14630884.

The product of its digits is 677376, while the sum is 46.

The square root of 248724739 is about 15771.0094477177. The cubic root of 248724739 is about 628.8875463183.

The spelling of 248724739 in words is "two hundred forty-eight million, seven hundred twenty-four thousand, seven hundred thirty-nine".