2459861 has 2 divisors, whose sum is σ = 2459862. Its totient is φ = 2459860.

The previous prime is 2459857. The next prime is 2459869. The reversal of 2459861 is 1689542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1976836 + 483025 = 1406^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 2459861 - 2² = 2459857 is a prime.

It is a super-2 number, since 2×2459861² = 12101832278642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2459869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1229930 + 1229931.

It is an arithmetic number, because the mean of its divisors is an integer number (1229931).

2^2459861 is an apocalyptic number.

It is an amenable number.

2459861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2459861 is an equidigital number, since it uses as much as digits as its factorization.

2459861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 2459861 is about 1568.3944019283. The cubic root of 2459861 is about 134.9905983393.

The spelling of 2459861 in words is "two million, four hundred fifty-nine thousand, eight hundred sixty-one".