1339999 has 8 divisors (see below), whose sum is σ = 1382832. Its totient is φ = 1297920.

The previous prime is 1339993. The next prime is 1340011. The reversal of 1339999 is 9999331.

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 1339999 - 2⁹ = 1339487 is a prime.

It is a Duffinian number.

1339999 is a modest number, since divided by 9999 gives 133 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339993) 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, 6847 + ... + 7039.

It is an arithmetic number, because the mean of its divisors is an integer number (172854).

2^1339999 is an apocalyptic number.

1339999 is a deficient number, since it is larger than the sum of its proper divisors (42833).

1339999 is a wasteful number, since it uses less digits than its factorization.

1339999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377.

The product of its digits is 59049, while the sum is 43.

The square root of 1339999 is about 1157.5832583447. The cubic root of 1339999 is about 110.2473497202.

The spelling of 1339999 in words is "one million, three hundred thirty-nine thousand, nine hundred ninety-nine".