838438742 has 16 divisors (see below), whose sum is σ = 1334033712. Its totient is φ = 393849600.

The previous prime is 838438729. The next prime is 838438751. The reversal of 838438742 is 247834838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2759 + ... + 41042.

It is an arithmetic number, because the mean of its divisors is an integer number (83377107).

Almost surely, 2^838438742 is an apocalyptic number.

838438742 is a deficient number, since it is larger than the sum of its proper divisors (495594970).

838438742 is a wasteful number, since it uses less digits than its factorization.

838438742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44383.

The product of its digits is 1032192, while the sum is 47.

The square root of 838438742 is about 28955.8067060823. The cubic root of 838438742 is about 942.9538670568.

The spelling of 838438742 in words is "eight hundred thirty-eight million, four hundred thirty-eight thousand, seven hundred forty-two".