1489797993 has 8 divisors (see below), whose sum is σ = 1986743808. Its totient is φ = 993025424.

The previous prime is 1489797983. The next prime is 1489798019. The reversal of 1489797993 is 3997979841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1489797993 - 2¹³ = 1489789801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1489797973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21705 + ... + 58742.

It is an arithmetic number, because the mean of its divisors is an integer number (248342976).

Almost surely, 2^1489797993 is an apocalyptic number.

It is an amenable number.

1489797993 is a deficient number, since it is larger than the sum of its proper divisors (496945815).

1489797993 is an equidigital number, since it uses as much as digits as its factorization.

1489797993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86623.

The product of its digits is 30862944, while the sum is 66.

The square root of 1489797993 is about 38597.9014066827. The cubic root of 1489797993 is about 1142.1131404596.

The spelling of 1489797993 in words is "one billion, four hundred eighty-nine million, seven hundred ninety-seven thousand, nine hundred ninety-three".