3990061138 has 8 divisors (see below), whose sum is σ = 6840104832. Its totient is φ = 1710026196.

The previous prime is 3990061133. The next prime is 3990061157. The reversal of 3990061138 is 8311600993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3990061138.

It is not an unprimeable number, because it can be changed into a prime (3990061133) 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, 142502170 + ... + 142502197.

It is an arithmetic number, because the mean of its divisors is an integer number (855013104).

Almost surely, 2^3990061138 is an apocalyptic number.

3990061138 is a deficient number, since it is larger than the sum of its proper divisors (2850043694).

3990061138 is a wasteful number, since it uses less digits than its factorization.

3990061138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285004376.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 3990061138 is about 63166.9307311983. The cubic root of 3990061138 is about 1586.0852148726.

The spelling of 3990061138 in words is "three billion, nine hundred ninety million, sixty-one thousand, one hundred thirty-eight".