838338404 has 6 divisors (see below), whose sum is σ = 1467092214. Its totient is φ = 419169200.

The previous prime is 838338401. The next prime is 838338419. The reversal of 838338404 is 404833838.

It can be written as a sum of positive squares in only one way, i.e., 739296100 + 99042304 = 27190^2 + 9952^2 .

It is a super-2 number, since 2×838338404² = 1405622559242534432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (838338401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104792297 + ... + 104792304.

It is an arithmetic number, because the mean of its divisors is an integer number (244515369).

Almost surely, 2^838338404 is an apocalyptic number.

It is an amenable number.

838338404 is a deficient number, since it is larger than the sum of its proper divisors (628753810).

838338404 is a wasteful number, since it uses less digits than its factorization.

838338404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209584605 (or 209584603 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 838338404 is about 28954.0740483960. The cubic root of 838338404 is about 942.9162503633.

The spelling of 838338404 in words is "eight hundred thirty-eight million, three hundred thirty-eight thousand, four hundred four".