427029445109 has 2 divisors, whose sum is σ = 427029445110. Its totient is φ = 427029445108.

The previous prime is 427029445097. The next prime is 427029445123. The reversal of 427029445109 is 901544920724.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417716616100 + 9312829009 = 646310^2 + 96503^2 .

It is a cyclic number.

It is not a de Polignac number, because 427029445109 - 2⁴ = 427029445093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427029445169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213514722554 + 213514722555.

It is an arithmetic number, because the mean of its divisors is an integer number (213514722555).

Almost surely, 2^427029445109 is an apocalyptic number.

It is an amenable number.

427029445109 is a deficient number, since it is larger than the sum of its proper divisors (1).

427029445109 is an equidigital number, since it uses as much as digits as its factorization.

427029445109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 427029445109 in words is "four hundred twenty-seven billion, twenty-nine million, four hundred forty-five thousand, one hundred nine".