900004019 has 2 divisors, whose sum is σ = 900004020. Its totient is φ = 900004018.

The previous prime is 900003991. The next prime is 900004043. The reversal of 900004019 is 910400009.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 900004019 - 2¹⁶ = 899938483 is a prime.

It is a super-2 number, since 2×900004019² = 1620014468432304722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 900003985 and 900004003.

It is not a weakly prime, because it can be changed into another prime (900004069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450002009 + 450002010.

It is an arithmetic number, because the mean of its divisors is an integer number (450002010).

Almost surely, 2^900004019 is an apocalyptic number.

900004019 is a deficient number, since it is larger than the sum of its proper divisors (1).

900004019 is an equidigital number, since it uses as much as digits as its factorization.

900004019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 900004019 is about 30000.0669832586. The cubic root of 900004019 is about 965.4908217523.

The spelling of 900004019 in words is "nine hundred million, four thousand, nineteen".