2199628397 has 2 divisors, whose sum is σ = 2199628398. Its totient is φ = 2199628396.

The previous prime is 2199628349. The next prime is 2199628523. The reversal of 2199628397 is 7938269912.

2199628397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1775021161 + 424607236 = 42131^2 + 20606^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199628397 - 2²⁸ = 1931192941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2199628597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099814198 + 1099814199.

It is an arithmetic number, because the mean of its divisors is an integer number (1099814199).

Almost surely, 2^2199628397 is an apocalyptic number.

It is an amenable number.

2199628397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199628397 is an equidigital number, since it uses as much as digits as its factorization.

2199628397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 56.

The square root of 2199628397 is about 46900.1961296539. The cubic root of 2199628397 is about 1300.5182148972.

The spelling of 2199628397 in words is "two billion, one hundred ninety-nine million, six hundred twenty-eight thousand, three hundred ninety-seven".