1389659699 has 4 divisors (see below), whose sum is σ = 1423553880. Its totient is φ = 1355765520.

The previous prime is 1389659693. The next prime is 1389659749. The reversal of 1389659699 is 9969569831.

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

It is a cyclic number.

It is not a de Polignac number, because 1389659699 - 2⁴ = 1389659683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389659693) 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, 16947029 + ... + 16947110.

It is an arithmetic number, because the mean of its divisors is an integer number (355888470).

Almost surely, 2^1389659699 is an apocalyptic number.

1389659699 is a deficient number, since it is larger than the sum of its proper divisors (33894181).

1389659699 is an equidigital number, since it uses as much as digits as its factorization.

1389659699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33894180.

The product of its digits is 28343520, while the sum is 65.

The square root of 1389659699 is about 37278.1396933914. The cubic root of 1389659699 is about 1115.9279475734.

The spelling of 1389659699 in words is "one billion, three hundred eighty-nine million, six hundred fifty-nine thousand, six hundred ninety-nine".