248397391 has 24 divisors (see below), whose sum is σ = 283468752. Its totient is φ = 217324800.

The previous prime is 248397377. The next prime is 248397419. The reversal of 248397391 is 193793842.

It is not a de Polignac number, because 248397391 - 2²⁵ = 214842959 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 (248397301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 505656 + ... + 506146.

It is an arithmetic number, because the mean of its divisors is an integer number (11811198).

Almost surely, 2^248397391 is an apocalyptic number.

248397391 is a deficient number, since it is larger than the sum of its proper divisors (35071361).

248397391 is a wasteful number, since it uses less digits than its factorization.

248397391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 652 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 248397391 is about 15760.6278745487. The cubic root of 248397391 is about 628.6115310724.

The spelling of 248397391 in words is "two hundred forty-eight million, three hundred ninety-seven thousand, three hundred ninety-one".