740739 has 4 divisors (see below), whose sum is σ = 987656. Its totient is φ = 493824.

The previous prime is 740737. The next prime is 740749. The reversal of 740739 is 937047.

740739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 937047 = 3 ⋅312349.

It is not a de Polignac number, because 740739 - 2¹ = 740737 is a prime.

It is a super-2 number, since 2×740739² = 1097388532242, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740737) 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, 123454 + ... + 123459.

It is an arithmetic number, because the mean of its divisors is an integer number (246914).

2⁷⁴⁰⁷³⁹ is an apocalyptic number.

740739 is a deficient number, since it is larger than the sum of its proper divisors (246917).

740739 is a wasteful number, since it uses less digits than its factorization.

740739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246916.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 740739 is about 860.6619545443. The cubic root of 740739 is about 90.4805163433.

Adding to 740739 its product of nonzero digits (5292), we get a triangular number (746031 = T₁₂₂₁).

The spelling of 740739 in words is "seven hundred forty thousand, seven hundred thirty-nine".