1220630839 has 2 divisors, whose sum is σ = 1220630840. Its totient is φ = 1220630838.

The previous prime is 1220630743. The next prime is 1220630849. The reversal of 1220630839 is 9380360221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220630839 - 2²³ = 1212242231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220630849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610315419 + 610315420.

It is an arithmetic number, because the mean of its divisors is an integer number (610315420).

Almost surely, 2^1220630839 is an apocalyptic number.

1220630839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220630839 is an equidigital number, since it uses as much as digits as its factorization.

1220630839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1220630839 is about 34937.5276600964. The cubic root of 1220630839 is about 1068.7138706070.

The spelling of 1220630839 in words is "one billion, two hundred twenty million, six hundred thirty thousand, eight hundred thirty-nine".