740438709 has 12 divisors (see below), whose sum is σ = 1014660864. Its totient is φ = 480281904.

The previous prime is 740438693. The next prime is 740438711. The reversal of 740438709 is 907834047.

It is not a de Polignac number, because 740438709 - 2⁴ = 740438693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740438729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86037 + ... + 94250.

It is an arithmetic number, because the mean of its divisors is an integer number (84555072).

Almost surely, 2^740438709 is an apocalyptic number.

It is an amenable number.

740438709 is a deficient number, since it is larger than the sum of its proper divisors (274222155).

740438709 is a wasteful number, since it uses less digits than its factorization.

740438709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180364 (or 180327 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 740438709 is about 27211.0034544851. The cubic root of 740438709 is about 904.6828794386.

It can be divided in two parts, 740438 and 709, that added together give a palindrome (741147).

The spelling of 740438709 in words is "seven hundred forty million, four hundred thirty-eight thousand, seven hundred nine".