904826138 has 4 divisors (see below), whose sum is σ = 1357239210. Its totient is φ = 452413068.

The previous prime is 904826137. The next prime is 904826149. The reversal of 904826138 is 831628409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831628409 = 787 ⋅1056707.

It can be written as a sum of positive squares in only one way, i.e., 452966089 + 451860049 = 21283^2 + 21257^2 .

It is a junction number, because it is equal to n+sod(n) for n = 904826095 and 904826104.

It is not an unprimeable number, because it can be changed into a prime (904826137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226206533 + ... + 226206536.

Almost surely, 2^904826138 is an apocalyptic number.

904826138 is a deficient number, since it is larger than the sum of its proper divisors (452413072).

904826138 is a wasteful number, since it uses less digits than its factorization.

904826138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452413071.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 904826138 is about 30080.3280899660. The cubic root of 904826138 is about 967.2120812415.

The spelling of 904826138 in words is "nine hundred four million, eight hundred twenty-six thousand, one hundred thirty-eight".