263384473 has 4 divisors (see below), whose sum is σ = 287328528. Its totient is φ = 239440420.

The previous prime is 263384461. The next prime is 263384491. The reversal of 263384473 is 374483362.

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.

It is a cyclic number.

It is not a de Polignac number, because 263384473 - 2²¹ = 261287321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263384413) 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, 11972011 + ... + 11972032.

It is an arithmetic number, because the mean of its divisors is an integer number (71832132).

Almost surely, 2^263384473 is an apocalyptic number.

It is an amenable number.

263384473 is a deficient number, since it is larger than the sum of its proper divisors (23944055).

263384473 is a wasteful number, since it uses less digits than its factorization.

263384473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23944054.

The product of its digits is 290304, while the sum is 40.

The square root of 263384473 is about 16229.1242215962. The cubic root of 263384473 is about 641.0079113577.

The spelling of 263384473 in words is "two hundred sixty-three million, three hundred eighty-four thousand, four hundred seventy-three".