709741490639 has 4 divisors (see below), whose sum is σ = 709748132424. Its totient is φ = 709734848856.

The previous prime is 709741490621. The next prime is 709741490683. The reversal of 709741490639 is 936094147907.

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

It is a cyclic number.

It is not a de Polignac number, because 709741490639 - 2¹⁶ = 709741425103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709741490839) 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, 3157937 + ... + 3375210.

It is an arithmetic number, because the mean of its divisors is an integer number (177437033106).

Almost surely, 2^709741490639 is an apocalyptic number.

709741490639 is a deficient number, since it is larger than the sum of its proper divisors (6641785).

709741490639 is a wasteful number, since it uses less digits than its factorization.

709741490639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6641784.

The product of its (nonzero) digits is 10287648, while the sum is 59.

The spelling of 709741490639 in words is "seven hundred nine billion, seven hundred forty-one million, four hundred ninety thousand, six hundred thirty-nine".