739999 has 4 divisors (see below), whose sum is σ = 796936. Its totient is φ = 683064.

The previous prime is 739969. The next prime is 740011. The reversal of 739999 is 999937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999937 = 113 ⋅8849.

It is a cyclic number.

It is not a de Polignac number, because 739999 - 2⁵ = 739967 is a prime.

It is a Duffinian number.

739999 is a modest number, since divided by 999 gives 739 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (739909) 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, 28449 + ... + 28474.

It is an arithmetic number, because the mean of its divisors is an integer number (199234).

2⁷³⁹⁹⁹⁹ is an apocalyptic number.

739999 is a deficient number, since it is larger than the sum of its proper divisors (56937).

739999 is a wasteful number, since it uses less digits than its factorization.

739999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56936.

The product of its digits is 137781, while the sum is 46.

The square root of 739999 is about 860.2319454659. The cubic root of 739999 is about 90.4503762217.

It can be divided in two parts, 73 and 9999, that multiplied together give a palindrome (729927).

The spelling of 739999 in words is "seven hundred thirty-nine thousand, nine hundred ninety-nine".