903649 has 2 divisors, whose sum is σ = 903650. Its totient is φ = 903648.

The previous prime is 903641. The next prime is 903673. The reversal of 903649 is 946309.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 889249 + 14400 = 943^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 903649 - 2³ = 903641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 903649.

It is not a weakly prime, because it can be changed into another prime (903641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451824 + 451825.

It is an arithmetic number, because the mean of its divisors is an integer number (451825).

2⁹⁰³⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

903649 is a deficient number, since it is larger than the sum of its proper divisors (1).

903649 is an equidigital number, since it uses as much as digits as its factorization.

903649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 903649 is about 950.6045444873. The cubic root of 903649 is about 96.6792466122.

The spelling of 903649 in words is "nine hundred three thousand, six hundred forty-nine".