809400255 has 8 divisors (see below), whose sum is σ = 1295040432. Its totient is φ = 431680128.

The previous prime is 809400253. The next prime is 809400257. The reversal of 809400255 is 552004908.

It is an interprime number because it is at equal distance from previous prime (809400253) and next prime (809400257).

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

It is not a de Polignac number, because 809400255 - 2¹ = 809400253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809400253) 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, 26979994 + ... + 26980023.

It is an arithmetic number, because the mean of its divisors is an integer number (161880054).

Almost surely, 2^809400255 is an apocalyptic number.

809400255 is a deficient number, since it is larger than the sum of its proper divisors (485640177).

809400255 is a wasteful number, since it uses less digits than its factorization.

809400255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53960025.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 809400255 is about 28449.9605447881. The cubic root of 809400255 is about 931.9396274296.

The spelling of 809400255 in words is "eight hundred nine million, four hundred thousand, two hundred fifty-five".