1420039609 has 2 divisors, whose sum is σ = 1420039610. Its totient is φ = 1420039608.

The previous prime is 1420039603. The next prime is 1420039639. The reversal of 1420039609 is 9069300241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 907696384 + 512343225 = 30128^2 + 22635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420039609 is a prime.

It is a super-2 number, since 2×1420039609² = 4033024982257745762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1420039603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710019804 + 710019805.

It is an arithmetic number, because the mean of its divisors is an integer number (710019805).

Almost surely, 2^1420039609 is an apocalyptic number.

It is an amenable number.

1420039609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420039609 is an equidigital number, since it uses as much as digits as its factorization.

1420039609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1420039609 is about 37683.4129160298. The cubic root of 1420039609 is about 1124.0013152575.

The spelling of 1420039609 in words is "one billion, four hundred twenty million, thirty-nine thousand, six hundred nine".