4447606861 has 4 divisors (see below), whose sum is σ = 4709230812. Its totient is φ = 4185982912.

The previous prime is 4447606829. The next prime is 4447606873. The reversal of 4447606861 is 1686067444.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4015756900 + 431849961 = 63370^2 + 20781^2 .

It is a cyclic number.

It is not a de Polignac number, because 4447606861 - 2⁵ = 4447606829 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 (4447606061) 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, 130811950 + ... + 130811983.

It is an arithmetic number, because the mean of its divisors is an integer number (1177307703).

Almost surely, 2^4447606861 is an apocalyptic number.

It is an amenable number.

4447606861 is a deficient number, since it is larger than the sum of its proper divisors (261623951).

4447606861 is a wasteful number, since it uses less digits than its factorization.

4447606861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261623950.

The product of its (nonzero) digits is 774144, while the sum is 46.

The square root of 4447606861 is about 66690.3805732131. The cubic root of 4447606861 is about 1644.5312499271.

The spelling of 4447606861 in words is "four billion, four hundred forty-seven million, six hundred six thousand, eight hundred sixty-one".