900609943 has 2 divisors, whose sum is σ = 900609944. Its totient is φ = 900609942.

The previous prime is 900609883. The next prime is 900609949. The reversal of 900609943 is 349906009.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 900609943 - 2²⁹ = 363739031 is a prime.

It is a super-2 number, since 2×900609943² = 1622196538860926498, which contains 22 as substring.

It is equal to p_46038883 and since 900609943 and 46038883 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 900609896 and 900609905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900609949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450304971 + 450304972.

It is an arithmetic number, because the mean of its divisors is an integer number (450304972).

Almost surely, 2^900609943 is an apocalyptic number.

900609943 is a deficient number, since it is larger than the sum of its proper divisors (1).

900609943 is an equidigital number, since it uses as much as digits as its factorization.

900609943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 900609943 is about 30010.1639948868. The cubic root of 900609943 is about 965.7074440530.

The spelling of 900609943 in words is "nine hundred million, six hundred nine thousand, nine hundred forty-three".