709448623 has 4 divisors (see below), whose sum is σ = 764021608. Its totient is φ = 654875640.

The previous prime is 709448587. The next prime is 709448669. The reversal of 709448623 is 326844907.

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 709448623 - 2⁹ = 709448111 is a prime.

It is a super-3 number, since 3×709448623³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 709448623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709448723) 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, 27286473 + ... + 27286498.

It is an arithmetic number, because the mean of its divisors is an integer number (191005402).

Almost surely, 2^709448623 is an apocalyptic number.

709448623 is a deficient number, since it is larger than the sum of its proper divisors (54572985).

709448623 is a wasteful number, since it uses less digits than its factorization.

709448623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54572984.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 709448623 is about 26635.4767744075. The cubic root of 709448623 is about 891.8811463130.

The spelling of 709448623 in words is "seven hundred nine million, four hundred forty-eight thousand, six hundred twenty-three".