903966989 has 8 divisors (see below), whose sum is σ = 907722552. Its totient is φ = 900218880.

The previous prime is 903966983. The next prime is 903967007. The reversal of 903966989 is 989669309.

It is a happy number.

903966989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 281065225 + 622901764 = 16765^2 + 24958^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-903966989 is a prime.

It is a super-2 number, since 2×903966989² = 1634312634403452242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (903966983) 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, 405899 + ... + 408119.

It is an arithmetic number, because the mean of its divisors is an integer number (113465319).

Almost surely, 2^903966989 is an apocalyptic number.

It is an amenable number.

903966989 is a deficient number, since it is larger than the sum of its proper divisors (3755563).

903966989 is a wasteful number, since it uses less digits than its factorization.

903966989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727.

The product of its (nonzero) digits is 5668704, while the sum is 59.

The square root of 903966989 is about 30066.0437869700. The cubic root of 903966989 is about 966.9058557666.

The spelling of 903966989 in words is "nine hundred three million, nine hundred sixty-six thousand, nine hundred eighty-nine".