2400878891 has 8 divisors (see below), whose sum is σ = 2415132384. Its totient is φ = 2386644480.

The previous prime is 2400878827. The next prime is 2400878923. The reversal of 2400878891 is 1988780042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2400878891 - 2⁶ = 2400878827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2400872891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306281 + ... + 314021.

It is an arithmetic number, because the mean of its divisors is an integer number (301891548).

Almost surely, 2^2400878891 is an apocalyptic number.

2400878891 is a deficient number, since it is larger than the sum of its proper divisors (14253493).

2400878891 is a wasteful number, since it uses less digits than its factorization.

2400878891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9541.

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 2400878891 is about 48998.7641782933. The cubic root of 2400878891 is about 1339.0293131615.

The spelling of 2400878891 in words is "two billion, four hundred million, eight hundred seventy-eight thousand, eight hundred ninety-one".