263797091 has 4 divisors (see below), whose sum is σ = 264770784. Its totient is φ = 262823400.

The previous prime is 263797057. The next prime is 263797099. The reversal of 263797091 is 190797362.

It is a happy number.

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 263797091 - 2¹⁴ = 263780707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263797099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486440 + ... + 486981.

It is an arithmetic number, because the mean of its divisors is an integer number (66192696).

Almost surely, 2^263797091 is an apocalyptic number.

263797091 is a deficient number, since it is larger than the sum of its proper divisors (973693).

263797091 is an equidigital number, since it uses as much as digits as its factorization.

263797091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973692.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 263797091 is about 16241.8315161807. The cubic root of 263797091 is about 641.3424709492.

The spelling of 263797091 in words is "two hundred sixty-three million, seven hundred ninety-seven thousand, ninety-one".