284691961 has 4 divisors (see below), whose sum is σ = 286041424. Its totient is φ = 283342500.

The previous prime is 284691959. The next prime is 284691971. The reversal of 284691961 is 169196482.

It is a happy number.

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 284691961 - 2¹ = 284691959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284691931) 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, 674415 + ... + 674836.

It is an arithmetic number, because the mean of its divisors is an integer number (71510356).

Almost surely, 2^284691961 is an apocalyptic number.

It is an amenable number.

284691961 is a deficient number, since it is larger than the sum of its proper divisors (1349463).

284691961 is a wasteful number, since it uses less digits than its factorization.

284691961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349462.

The product of its digits is 186624, while the sum is 46.

The square root of 284691961 is about 16872.8172217920. The cubic root of 284691961 is about 657.8472566997.

The spelling of 284691961 in words is "two hundred eighty-four million, six hundred ninety-one thousand, nine hundred sixty-one".