3217406838 has 32 divisors (see below), whose sum is σ = 6782979840. Its totient is φ = 1014599520.

The previous prime is 3217406837. The next prime is 3217406849. The reversal of 3217406838 is 8386047123.

It is a super-4 number, since 4×3217406838⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 3217406838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3217406837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63468 + ... + 102288.

It is an arithmetic number, because the mean of its divisors is an integer number (211968120).

Almost surely, 2^3217406838 is an apocalyptic number.

3217406838 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3217406838 is an abundant number, since it is smaller than the sum of its proper divisors (3565573002).

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

3217406838 is a wasteful number, since it uses less digits than its factorization.

3217406838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39572.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 3217406838 is about 56722.1899965084. The cubic root of 3217406838 is about 1476.2797416697.

The spelling of 3217406838 in words is "three billion, two hundred seventeen million, four hundred six thousand, eight hundred thirty-eight".