730739 has 4 divisors (see below), whose sum is σ = 734160. Its totient is φ = 727320.

The previous prime is 730727. The next prime is 730747. The reversal of 730739 is 937037.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730739 is a prime.

It is a super-2 number, since 2×730739² = 1067958972242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1367 + ... + 1824.

It is an arithmetic number, because the mean of its divisors is an integer number (183540).

2⁷³⁰⁷³⁹ is an apocalyptic number.

730739 is a deficient number, since it is larger than the sum of its proper divisors (3421).

730739 is a wasteful number, since it uses less digits than its factorization.

730739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420.

The product of its (nonzero) digits is 3969, while the sum is 29.

The square root of 730739 is about 854.8327321763. The cubic root of 730739 is about 90.0715069571.

The spelling of 730739 in words is "seven hundred thirty thousand, seven hundred thirty-nine".