1399017089 has 4 divisors (see below), whose sum is σ = 1399170480. Its totient is φ = 1398863700.

The previous prime is 1399017001. The next prime is 1399017121. The reversal of 1399017089 is 9807109931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9807109931 = 107 ⋅91655233.

It is a cyclic number.

It is not a de Polignac number, because 1399017089 - 2²⁸ = 1130581633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1399017689) 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, 62087 + ... + 81564.

It is an arithmetic number, because the mean of its divisors is an integer number (349792620).

Almost surely, 2^1399017089 is an apocalyptic number.

It is an amenable number.

1399017089 is a deficient number, since it is larger than the sum of its proper divisors (153391).

1399017089 is an equidigital number, since it uses as much as digits as its factorization.

1399017089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153390.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 1399017089 is about 37403.4368608020. The cubic root of 1399017089 is about 1118.4270780109.

The spelling of 1399017089 in words is "one billion, three hundred ninety-nine million, seventeen thousand, eighty-nine".