1222447790 has 16 divisors (see below), whose sum is σ = 2201349312. Its totient is φ = 488769504.

The previous prime is 1222447789. The next prime is 1222447879. The reversal of 1222447790 is 977442221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509 + ... + 49448.

It is an arithmetic number, because the mean of its divisors is an integer number (137584332).

Almost surely, 2^1222447790 is an apocalyptic number.

1222447790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222447790 is a deficient number, since it is larger than the sum of its proper divisors (978901522).

1222447790 is a wasteful number, since it uses less digits than its factorization.

1222447790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52411.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 1222447790 is about 34963.5208467340. The cubic root of 1222447790 is about 1069.2438801701.

The spelling of 1222447790 in words is "one billion, two hundred twenty-two million, four hundred forty-seven thousand, seven hundred ninety".