2400202091 has 4 divisors (see below), whose sum is σ = 2743088112. Its totient is φ = 2057316072.

The previous prime is 2400202087. The next prime is 2400202097. The reversal of 2400202091 is 1902020042.

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

It is not a de Polignac number, because 2400202091 - 2² = 2400202087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2400202097) 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, 171443000 + ... + 171443013.

It is an arithmetic number, because the mean of its divisors is an integer number (685772028).

Almost surely, 2^2400202091 is an apocalyptic number.

2400202091 is a deficient number, since it is larger than the sum of its proper divisors (342886021).

2400202091 is an equidigital number, since it uses as much as digits as its factorization.

2400202091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342886020.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2400202091 is about 48991.8573948774. The cubic root of 2400202091 is about 1338.9034786580.

The spelling of 2400202091 in words is "two billion, four hundred million, two hundred two thousand, ninety-one".