804071438 has 4 divisors (see below), whose sum is σ = 1206107160. Its totient is φ = 402035718.

The previous prime is 804071419. The next prime is 804071447. The reversal of 804071438 is 834170408.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 804071398 and 804071407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201017858 + ... + 201017861.

It is an arithmetic number, because the mean of its divisors is an integer number (301526790).

Almost surely, 2^804071438 is an apocalyptic number.

804071438 is a deficient number, since it is larger than the sum of its proper divisors (402035722).

804071438 is a wasteful number, since it uses less digits than its factorization.

804071438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402035721.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 804071438 is about 28356.1534415372. The cubic root of 804071438 is about 929.8899310903.

The spelling of 804071438 in words is "eight hundred four million, seventy-one thousand, four hundred thirty-eight".