1420229989 has 2 divisors, whose sum is σ = 1420229990. Its totient is φ = 1420229988.

The previous prime is 1420229981. The next prime is 1420230061. The reversal of 1420229989 is 9899220241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1335902500 + 84327489 = 36550^2 + 9183^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420229989 - 2³ = 1420229981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420229981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710114994 + 710114995.

It is an arithmetic number, because the mean of its divisors is an integer number (710114995).

Almost surely, 2^1420229989 is an apocalyptic number.

It is an amenable number.

1420229989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420229989 is an equidigital number, since it uses as much as digits as its factorization.

1420229989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 1420229989 is about 37685.9388764563. The cubic root of 1420229989 is about 1124.0515433889.

The spelling of 1420229989 in words is "one billion, four hundred twenty million, two hundred twenty-nine thousand, nine hundred eighty-nine".