287968093 has 4 divisors (see below), whose sum is σ = 329106400. Its totient is φ = 246829788.

The previous prime is 287968061. The next prime is 287968097. The reversal of 287968093 is 390869782.

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, and also an emirpimes, since its reverse is a distinct semiprime: 390869782 = 2 ⋅195434891.

It is a cyclic number.

It is not a de Polignac number, because 287968093 - 2⁵ = 287968061 is a prime.

It is a super-3 number, since 3×287968093³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 287968093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287968097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20569143 + ... + 20569156.

It is an arithmetic number, because the mean of its divisors is an integer number (82276600).

Almost surely, 2^287968093 is an apocalyptic number.

It is an amenable number.

287968093 is a deficient number, since it is larger than the sum of its proper divisors (41138307).

287968093 is an equidigital number, since it uses as much as digits as its factorization.

287968093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41138306.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 287968093 is about 16969.6226534358. The cubic root of 287968093 is about 660.3610612410.

The spelling of 287968093 in words is "two hundred eighty-seven million, nine hundred sixty-eight thousand, ninety-three".