4644139995 has 64 divisors (see below), whose sum is σ = 9024238080. Its totient is φ = 2247350400.

The previous prime is 4644139991. The next prime is 4644140021. The reversal of 4644139995 is 5999314464.

It is a happy number.

4644139995 is a `hidden beast` number, since 464 + 4 + 1 + 3 + 99 + 95 = 666.

It is not a de Polignac number, because 4644139995 - 2² = 4644139991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4644139991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 845197 + ... + 850673.

It is an arithmetic number, because the mean of its divisors is an integer number (141003720).

Almost surely, 2^4644139995 is an apocalyptic number.

4644139995 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4644139995 is a deficient number, since it is larger than the sum of its proper divisors (4380098085).

4644139995 is a wasteful number, since it uses less digits than its factorization.

4644139995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6073 (or 6067 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 4644139995 is about 68147.9272979010. The cubic root of 4644139995 is about 1668.4060945140.

It can be divided in two parts, 46441 and 39995, that added together give a square (86436 = 294²).

The spelling of 4644139995 in words is "four billion, six hundred forty-four million, one hundred thirty-nine thousand, nine hundred ninety-five".