2400869 has 2 divisors, whose sum is σ = 2400870. Its totient is φ = 2400868.

The previous prime is 2400863. The next prime is 2400883. The reversal of 2400869 is 9680042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1350244 + 1050625 = 1162^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2400869 - 2⁸ = 2400613 is a prime.

It is a super-2 number, since 2×2400869² = 11528343910322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2400863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200434 + 1200435.

It is an arithmetic number, because the mean of its divisors is an integer number (1200435).

2^2400869 is an apocalyptic number.

It is an amenable number.

2400869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2400869 is an equidigital number, since it uses as much as digits as its factorization.

2400869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2400869 is about 1549.4737816433. The cubic root of 2400869 is about 133.9027474341.

The spelling of 2400869 in words is "two million, four hundred thousand, eight hundred sixty-nine".