2215400389 has 2 divisors, whose sum is σ = 2215400390. Its totient is φ = 2215400388.

The previous prime is 2215400321. The next prime is 2215400401. The reversal of 2215400389 is 9830045122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2206650625 + 8749764 = 46975^2 + 2958^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215400389 - 2⁷ = 2215400261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215460389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107700194 + 1107700195.

It is an arithmetic number, because the mean of its divisors is an integer number (1107700195).

Almost surely, 2^2215400389 is an apocalyptic number.

It is an amenable number.

2215400389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215400389 is an equidigital number, since it uses as much as digits as its factorization.

2215400389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 2215400389 is about 47068.0399953089. The cubic root of 2215400389 is about 1303.6191829393.

The spelling of 2215400389 in words is "two billion, two hundred fifteen million, four hundred thousand, three hundred eighty-nine".