2046407989 has 4 divisors (see below), whose sum is σ = 2054370924. Its totient is φ = 2038445056.

The previous prime is 2046407981. The next prime is 2046408019. The reversal of 2046407989 is 9897046402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1088010225 + 958397764 = 32985^2 + 30958^2 .

It is a cyclic number.

It is not a de Polignac number, because 2046407989 - 2³ = 2046407981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2046407981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3981082 + ... + 3981595.

It is an arithmetic number, because the mean of its divisors is an integer number (513592731).

Almost surely, 2^2046407989 is an apocalyptic number.

It is an amenable number.

2046407989 is a deficient number, since it is larger than the sum of its proper divisors (7962935).

2046407989 is an equidigital number, since it uses as much as digits as its factorization.

2046407989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7962934.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 2046407989 is about 45237.2411736171. The cubic root of 2046407989 is about 1269.5916989902.

The spelling of 2046407989 in words is "two billion, forty-six million, four hundred seven thousand, nine hundred eighty-nine".