4138729406 has 16 divisors (see below), whose sum is σ = 7113498624. Its totient is φ = 1769107704.

The previous prime is 4138729393. The next prime is 4138729423. The reversal of 4138729406 is 6049278314.

It is a super-2 number, since 2×4138729406² = 34258162192178225672, which contains 22 as substring.

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, 380570 + ... + 391293.

It is an arithmetic number, because the mean of its divisors is an integer number (444593664).

Almost surely, 2^4138729406 is an apocalyptic number.

4138729406 is a deficient number, since it is larger than the sum of its proper divisors (2974769218).

4138729406 is a wasteful number, since it uses less digits than its factorization.

4138729406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772255.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 4138729406 is about 64332.9573857754. The cubic root of 4138729406 is about 1605.5444891959.

The spelling of 4138729406 in words is "four billion, one hundred thirty-eight million, seven hundred twenty-nine thousand, four hundred six".