905149 has 8 divisors (see below), whose sum is σ = 1041408. Its totient is φ = 770640.

The previous prime is 905147. The next prime is 905161. The reversal of 905149 is 941509.

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

It is a cyclic number.

It is not a de Polignac number, because 905149 - 2¹ = 905147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905143) 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, 999 + ... + 1675.

It is an arithmetic number, because the mean of its divisors is an integer number (130176).

2⁹⁰⁵¹⁴⁹ is an apocalyptic number.

It is an amenable number.

905149 is a deficient number, since it is larger than the sum of its proper divisors (136259).

905149 is a wasteful number, since it uses less digits than its factorization.

905149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 905149 is about 951.3931889603. The cubic root of 905149 is about 96.7327108456.

The spelling of 905149 in words is "nine hundred five thousand, one hundred forty-nine".