723711889 has 4 divisors (see below), whose sum is σ = 725684224. Its totient is φ = 721739556.

The previous prime is 723711883. The next prime is 723711893. The reversal of 723711889 is 988117327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 723711889 - 2¹¹ = 723709841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723711883) 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, 985617 + ... + 986350.

It is an arithmetic number, because the mean of its divisors is an integer number (181421056).

Almost surely, 2^723711889 is an apocalyptic number.

It is an amenable number.

723711889 is a deficient number, since it is larger than the sum of its proper divisors (1972335).

723711889 is a wasteful number, since it uses less digits than its factorization.

723711889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972334.

The product of its digits is 169344, while the sum is 46.

The square root of 723711889 is about 26901.8937809218. The cubic root of 723711889 is about 897.8185393831.

The spelling of 723711889 in words is "seven hundred twenty-three million, seven hundred eleven thousand, eight hundred eighty-nine".