2190099949 has 2 divisors, whose sum is σ = 2190099950. Its totient is φ = 2190099948.

The previous prime is 2190099929. The next prime is 2190099991. The reversal of 2190099949 is 9499900912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2081001924 + 109098025 = 45618^2 + 10445^2 .

It is a cyclic number.

It is not a de Polignac number, because 2190099949 - 2²³ = 2181711341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2190099896 and 2190099905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190099929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095049974 + 1095049975.

It is an arithmetic number, because the mean of its divisors is an integer number (1095049975).

Almost surely, 2^2190099949 is an apocalyptic number.

It is an amenable number.

2190099949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190099949 is an equidigital number, since it uses as much as digits as its factorization.

2190099949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 52.

The square root of 2190099949 is about 46798.5037047126. The cubic root of 2190099949 is about 1298.6376159322.

The spelling of 2190099949 in words is "two billion, one hundred ninety million, ninety-nine thousand, nine hundred forty-nine".