1084004921 has 4 divisors (see below), whose sum is σ = 1084520052. Its totient is φ = 1083489792.

The previous prime is 1084004917. The next prime is 1084004951. The reversal of 1084004921 is 1294004801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 529920400 + 554084521 = 23020^2 + 23539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1084004921 - 2² = 1084004917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1084004951) 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, 254396 + ... + 258621.

It is an arithmetic number, because the mean of its divisors is an integer number (271130013).

Almost surely, 2^1084004921 is an apocalyptic number.

It is an amenable number.

1084004921 is a deficient number, since it is larger than the sum of its proper divisors (515131).

1084004921 is an equidigital number, since it uses as much as digits as its factorization.

1084004921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515130.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1084004921 is about 32924.2299985892. The cubic root of 1084004921 is about 1027.2522107577.

The spelling of 1084004921 in words is "one billion, eighty-four million, four thousand, nine hundred twenty-one".