84783121 has 8 divisors (see below), whose sum is σ = 87169824. Its totient is φ = 82411680.

The previous prime is 84783113. The next prime is 84783161. The reversal of 84783121 is 12138748.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84783121 - 2³ = 84783113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84783161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7950 + ... + 15256.

It is an arithmetic number, because the mean of its divisors is an integer number (10896228).

Almost surely, 2^84783121 is an apocalyptic number.

It is an amenable number.

84783121 is a deficient number, since it is larger than the sum of its proper divisors (2386703).

84783121 is a wasteful number, since it uses less digits than its factorization.

84783121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631.

The product of its digits is 10752, while the sum is 34.

The square root of 84783121 is about 9207.7750298321. The cubic root of 84783121 is about 439.3086957650.

The spelling of 84783121 in words is "eighty-four million, seven hundred eighty-three thousand, one hundred twenty-one".