906399 has 24 divisors (see below), whose sum is σ = 1444352. Its totient is φ = 544320.

The previous prime is 906391. The next prime is 906403. The reversal of 906399 is 993609.

It is not a de Polignac number, because 906399 - 2³ = 906391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7074 + ... + 7200.

2⁹⁰⁶³⁹⁹ is an apocalyptic number.

906399 is a deficient number, since it is larger than the sum of its proper divisors (537953).

906399 is a wasteful number, since it uses less digits than its factorization.

906399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 906399 is about 952.0498936505. The cubic root of 906399 is about 96.7772192710. Note that the first 3 decimals are identical.

The spelling of 906399 in words is "nine hundred six thousand, three hundred ninety-nine".