739 has 2 divisors, whose sum is σ = 740. Its totient is φ = 738.

The previous prime is 733. The next prime is 743. The reversal of 739 is 937.

It is a happy number.

It is a strong prime.

739 is a truncatable prime.

It is an emirp because it is prime and its reverse (937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 739 - 2^{9} = 227 is a prime.

It is a super-2 number, since 2×739^{2} = 1092242, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as **7** + **3** + **9**^{3} .

739 is a lucky number.

It is a plaindrome in base 13, base 14 and base 15.

It is not a weakly prime, because it can be changed into another prime (733) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369 + 370.

It is an arithmetic number, because the mean of its divisors is an integer number (370).

739 is a deficient number, since it is larger than the sum of its proper divisors (1).

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

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

The product of its digits is 189, while the sum is 19.

The square root of 739 is about 27.1845544381. The cubic root of 739 is about 9.0409655167.

Multiplying 739 by its sum of digits (19), we get a palindrome (14041).

The spelling of 739 in words is "seven hundred thirty-nine", and thus it is an aban number and an oban number.

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