1004858221 has 2 divisors, whose sum is σ = 1004858222. Its totient is φ = 1004858220.

The previous prime is 1004858209. The next prime is 1004858227. The reversal of 1004858221 is 1228584001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1004002596 + 855625 = 31686^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004858221 - 2⁷ = 1004858093 is a prime.

It is a super-2 number, since 2×1004858221² = 2019480088622569682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004858227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502429110 + 502429111.

It is an arithmetic number, because the mean of its divisors is an integer number (502429111).

Almost surely, 2^1004858221 is an apocalyptic number.

It is an amenable number.

1004858221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004858221 is an equidigital number, since it uses as much as digits as its factorization.

1004858221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 1004858221 is about 31699.4987499803. The cubic root of 1004858221 is about 1001.6167915762.

The spelling of 1004858221 in words is "one billion, four million, eight hundred fifty-eight thousand, two hundred twenty-one".