4020138599 has 4 divisors (see below), whose sum is σ = 4021343064. Its totient is φ = 4018934136.

The previous prime is 4020138533. The next prime is 4020138607. The reversal of 4020138599 is 9958310204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020138599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020135599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597212 + ... + 603905.

It is an arithmetic number, because the mean of its divisors is an integer number (1005335766).

Almost surely, 2^4020138599 is an apocalyptic number.

4020138599 is a deficient number, since it is larger than the sum of its proper divisors (1204465).

4020138599 is a wasteful number, since it uses less digits than its factorization.

4020138599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204464.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 4020138599 is about 63404.5629193988. The cubic root of 4020138599 is about 1590.0605964274.

The spelling of 4020138599 in words is "four billion, twenty million, one hundred thirty-eight thousand, five hundred ninety-nine".