723909461 has 4 divisors (see below), whose sum is σ = 789719424. Its totient is φ = 658099500.

The previous prime is 723909451. The next prime is 723909491. The reversal of 723909461 is 164909327.

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 723909461 - 2¹⁴ = 723893077 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 (723909451) 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, 32904965 + ... + 32904986.

It is an arithmetic number, because the mean of its divisors is an integer number (197429856).

Almost surely, 2^723909461 is an apocalyptic number.

It is an amenable number.

723909461 is a deficient number, since it is larger than the sum of its proper divisors (65809963).

723909461 is a wasteful number, since it uses less digits than its factorization.

723909461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65809962.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 723909461 is about 26905.5656138279. The cubic root of 723909461 is about 897.9002328801.

The spelling of 723909461 in words is "seven hundred twenty-three million, nine hundred nine thousand, four hundred sixty-one".