4661994139 has 8 divisors (see below), whose sum is σ = 5115211632. Its totient is φ = 4213676640.

The previous prime is 4661994097. The next prime is 4661994163. The reversal of 4661994139 is 9314991664.

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

It is a cyclic number.

It is not a de Polignac number, because 4661994139 - 2⁹ = 4661993627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4661994739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223004 + ... + 1226809.

It is an arithmetic number, because the mean of its divisors is an integer number (639401454).

Almost surely, 2^4661994139 is an apocalyptic number.

4661994139 is a deficient number, since it is larger than the sum of its proper divisors (453217493).

4661994139 is a wasteful number, since it uses less digits than its factorization.

4661994139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449997.

The product of its digits is 1259712, while the sum is 52.

The square root of 4661994139 is about 68278.7971408401. The cubic root of 4661994139 is about 1670.5413927092.

The spelling of 4661994139 in words is "four billion, six hundred sixty-one million, nine hundred ninety-four thousand, one hundred thirty-nine".