908945 has 4 divisors (see below), whose sum is σ = 1090740. Its totient is φ = 727152.

The previous prime is 908927. The next prime is 908953. The reversal of 908945 is 549809.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549809 = 13 ⋅42293.

It can be written as a sum of positive squares in 2 ways, for example, as 494209 + 414736 = 703^2 + 644^2 .

It is a cyclic number.

It is not a de Polignac number, because 908945 - 2⁶ = 908881 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90890 + ... + 90899.

It is an arithmetic number, because the mean of its divisors is an integer number (272685).

2⁹⁰⁸⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

908945 is a deficient number, since it is larger than the sum of its proper divisors (181795).

908945 is a wasteful number, since it uses less digits than its factorization.

908945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181794.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 908945 is about 953.3860708024. The cubic root of 908945 is about 96.8677476361.

The spelling of 908945 in words is "nine hundred eight thousand, nine hundred forty-five".