804888390 has 32 divisors (see below), whose sum is σ = 1932675840. Its totient is φ = 214532064.

The previous prime is 804888389. The next prime is 804888391. The reversal of 804888390 is 93888408.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (804888389) and next prime (804888391).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804888391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70887 + ... + 81453.

It is an arithmetic number, because the mean of its divisors is an integer number (60396120).

Almost surely, 2^804888390 is an apocalyptic number.

804888390 is an abundant number, since it is smaller than the sum of its proper divisors (1127787450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

804888390 is a wasteful number, since it uses less digits than its factorization.

804888390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13116.

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 804888390 is about 28370.5549822347. The cubic root of 804888390 is about 930.2047531598.

The spelling of 804888390 in words is "eight hundred four million, eight hundred eighty-eight thousand, three hundred ninety".