2400400087 has 2 divisors, whose sum is σ = 2400400088. Its totient is φ = 2400400086.

The previous prime is 2400400031. The next prime is 2400400109. The reversal of 2400400087 is 7800040042.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2400400087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2400400487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200200043 + 1200200044.

It is an arithmetic number, because the mean of its divisors is an integer number (1200200044).

Almost surely, 2^2400400087 is an apocalyptic number.

2400400087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2400400087 is an equidigital number, since it uses as much as digits as its factorization.

2400400087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 2400400087 is about 48993.8780563450. The cubic root of 2400400087 is about 1338.9402936475.

The spelling of 2400400087 in words is "two billion, four hundred million, four hundred thousand, eighty-seven".