855430 has 16 divisors (see below), whose sum is σ = 1553904. Its totient is φ = 339040.

The previous prime is 855427. The next prime is 855431. The reversal of 855430 is 34558.

It is a happy number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 855395 and 855404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855431) 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, 984 + ... + 1636.

It is an arithmetic number, because the mean of its divisors is an integer number (97119).

2⁸⁵⁵⁴³⁰ is an apocalyptic number.

855430 is a deficient number, since it is larger than the sum of its proper divisors (698474).

855430 is a wasteful number, since it uses less digits than its factorization.

855430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 855430 is about 924.8945885883. The cubic root of 855430 is about 94.9281081206.

Adding to 855430 its reverse (34558), we get a palindrome (889988).

The spelling of 855430 in words is "eight hundred fifty-five thousand, four hundred thirty".