2040400099 has 2 divisors, whose sum is σ = 2040400100. Its totient is φ = 2040400098.

The previous prime is 2040400079. The next prime is 2040400147. The reversal of 2040400099 is 9900040402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2040400099 - 2⁹ = 2040399587 is a prime.

It is not a weakly prime, because it can be changed into another prime (2040400069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020200049 + 1020200050.

It is an arithmetic number, because the mean of its divisors is an integer number (1020200050).

Almost surely, 2^2040400099 is an apocalyptic number.

2040400099 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040400099 is an equidigital number, since it uses as much as digits as its factorization.

2040400099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2040400099 is about 45170.7881157723. The cubic root of 2040400099 is about 1268.3480493196.

The spelling of 2040400099 in words is "two billion, forty million, four hundred thousand, ninety-nine".