281949883 has 4 divisors (see below), whose sum is σ = 284741568. Its totient is φ = 279158200.

The previous prime is 281949841. The next prime is 281949887. The reversal of 281949883 is 388949182.

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 281949883 - 2¹³ = 281941691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 281949883.

It is not an unprimeable number, because it can be changed into a prime (281949887) 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, 1395691 + ... + 1395892.

It is an arithmetic number, because the mean of its divisors is an integer number (71185392).

Almost surely, 2^281949883 is an apocalyptic number.

281949883 is a deficient number, since it is larger than the sum of its proper divisors (2791685).

281949883 is a wasteful number, since it uses less digits than its factorization.

281949883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791684.

The product of its digits is 995328, while the sum is 52.

The square root of 281949883 is about 16791.3633454821. The cubic root of 281949883 is about 655.7283686964.

The spelling of 281949883 in words is "two hundred eighty-one million, nine hundred forty-nine thousand, eight hundred eighty-three".