909481 has 2 divisors, whose sum is σ = 909482. Its totient is φ = 909480.

The previous prime is 909463. The next prime is 909521. The reversal of 909481 is 184909.

909481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 115600 = 891^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 909481 - 2¹¹ = 907433 is a prime.

It is a super-2 number, since 2×909481² = 1654311378722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (909401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454740 + 454741.

It is an arithmetic number, because the mean of its divisors is an integer number (454741).

2⁹⁰⁹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

909481 is a deficient number, since it is larger than the sum of its proper divisors (1).

909481 is an equidigital number, since it uses as much as digits as its factorization.

909481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 909481 is about 953.6671327041. The cubic root of 909481 is about 96.8867846919.

The spelling of 909481 in words is "nine hundred nine thousand, four hundred eighty-one".