2400840087 has 4 divisors (see below), whose sum is σ = 3201120120. Its totient is φ = 1600560056.

The previous prime is 2400840049. The next prime is 2400840097. The reversal of 2400840087 is 7800480042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2400840087 - 2¹⁸ = 2400577943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400840007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400140012 + ... + 400140017.

It is an arithmetic number, because the mean of its divisors is an integer number (800280030).

Almost surely, 2^2400840087 is an apocalyptic number.

2400840087 is a deficient number, since it is larger than the sum of its proper divisors (800280033).

2400840087 is an equidigital number, since it uses as much as digits as its factorization.

2400840087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800280032.

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 2400840087 is about 48998.3682075230. The cubic root of 2400840087 is about 1339.0220991403.

The spelling of 2400840087 in words is "two billion, four hundred million, eight hundred forty thousand, eighty-seven".