804729138 has 8 divisors (see below), whose sum is σ = 1609458288. Its totient is φ = 268243044.

The previous prime is 804729137. The next prime is 804729139. The reversal of 804729138 is 831927408.

It is an interprime number because it is at equal distance from previous prime (804729137) and next prime (804729139).

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

804729138 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 804729138.

It is not an unprimeable number, because it can be changed into a prime (804729137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67060756 + ... + 67060767.

It is an arithmetic number, because the mean of its divisors is an integer number (201182286).

Almost surely, 2^804729138 is an apocalyptic number.

804729138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

804729138 is a wasteful number, since it uses less digits than its factorization.

804729138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134121528.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 804729138 is about 28367.7482010822. The cubic root of 804729138 is about 930.1434002484.

The spelling of 804729138 in words is "eight hundred four million, seven hundred twenty-nine thousand, one hundred thirty-eight".