248707639 has 2 divisors, whose sum is σ = 248707640. Its totient is φ = 248707638.

The previous prime is 248707631. The next prime is 248707643. The reversal of 248707639 is 936707842.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 248707639 - 2³ = 248707631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248707631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124353819 + 124353820.

It is an arithmetic number, because the mean of its divisors is an integer number (124353820).

Almost surely, 2^248707639 is an apocalyptic number.

248707639 is a deficient number, since it is larger than the sum of its proper divisors (1).

248707639 is an equidigital number, since it uses as much as digits as its factorization.

248707639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 248707639 is about 15770.4673044270. The cubic root of 248707639 is about 628.8731338349.

The spelling of 248707639 in words is "two hundred forty-eight million, seven hundred seven thousand, six hundred thirty-nine".