72723959 has 8 divisors (see below), whose sum is σ = 90668928. Its totient is φ = 56667960.

The previous prime is 72723949. The next prime is 72723979. The reversal of 72723959 is 95932727.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72723959 - 2¹⁶ = 72658423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72723949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472157 + ... + 472310.

It is an arithmetic number, because the mean of its divisors is an integer number (11333616).

Almost surely, 2^72723959 is an apocalyptic number.

72723959 is a deficient number, since it is larger than the sum of its proper divisors (17944969).

72723959 is a wasteful number, since it uses less digits than its factorization.

72723959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944485.

The product of its digits is 238140, while the sum is 44.

The square root of 72723959 is about 8527.8343675285. The cubic root of 72723959 is about 417.4064647575.

The spelling of 72723959 in words is "seventy-two million, seven hundred twenty-three thousand, nine hundred fifty-nine".