1220400030439 has 2 divisors, whose sum is σ = 1220400030440. Its totient is φ = 1220400030438.

The previous prime is 1220400030407. The next prime is 1220400030449. The reversal of 1220400030439 is 9340300040221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220400030439 - 2⁵ = 1220400030407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220400030449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610200015219 + 610200015220.

It is an arithmetic number, because the mean of its divisors is an integer number (610200015220).

Almost surely, 2^{1220400030439} is an apocalyptic number.

1220400030439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220400030439 is an equidigital number, since it uses as much as digits as its factorization.

1220400030439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 1220400030439 in words is "one trillion, two hundred twenty billion, four hundred million, thirty thousand, four hundred thirty-nine".