4079861 has 2 divisors, whose sum is σ = 4079862. Its totient is φ = 4079860.

The previous prime is 4079857. The next prime is 4079891. The reversal of 4079861 is 1689704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2579236 + 1500625 = 1606^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 4079861 - 2² = 4079857 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4079821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2039930 + 2039931.

It is an arithmetic number, because the mean of its divisors is an integer number (2039931).

Almost surely, 2^4079861 is an apocalyptic number.

It is an amenable number.

4079861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4079861 is an equidigital number, since it uses as much as digits as its factorization.

4079861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 4079861 is about 2019.8665797522. The cubic root of 4079861 is about 159.7895801640.

The spelling of 4079861 in words is "four million, seventy-nine thousand, eight hundred sixty-one".