1078469221 has 2 divisors, whose sum is σ = 1078469222. Its totient is φ = 1078469220.

The previous prime is 1078469219. The next prime is 1078469237. The reversal of 1078469221 is 1229648701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999508225 + 78960996 = 31615^2 + 8886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078469221 - 2¹ = 1078469219 is a prime.

Together with 1078469219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078469251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539234610 + 539234611.

It is an arithmetic number, because the mean of its divisors is an integer number (539234611).

Almost surely, 2^1078469221 is an apocalyptic number.

It is an amenable number.

1078469221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078469221 is an equidigital number, since it uses as much as digits as its factorization.

1078469221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1078469221 is about 32840.0551308916. The cubic root of 1078469221 is about 1025.5005989393.

The spelling of 1078469221 in words is "one billion, seventy-eight million, four hundred sixty-nine thousand, two hundred twenty-one".