2403859 has 2 divisors, whose sum is σ = 2403860. Its totient is φ = 2403858.

The previous prime is 2403809. The next prime is 2403881. The reversal of 2403859 is 9583042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2403859 - 2⁹ = 2403347 is a prime.

2403859 is a lucky number.

It is equal to p₁₇₆₅₅₇ and since 2403859 and 176557 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2403859.

It is not a weakly prime, because it can be changed into another prime (2403809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201929 + 1201930.

It is an arithmetic number, because the mean of its divisors is an integer number (1201930).

2^2403859 is an apocalyptic number.

2403859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2403859 is an equidigital number, since it uses as much as digits as its factorization.

2403859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2403859 is about 1550.4383251197. The cubic root of 2403859 is about 133.9583110828.

The spelling of 2403859 in words is "two million, four hundred three thousand, eight hundred fifty-nine".