72459859 has 4 divisors (see below), whose sum is σ = 74145016. Its totient is φ = 70774704.

The previous prime is 72459841. The next prime is 72459883. The reversal of 72459859 is 95895427.

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 72459859 - 2⁷ = 72459731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72459809) 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, 842514 + ... + 842599.

It is an arithmetic number, because the mean of its divisors is an integer number (18536254).

Almost surely, 2^72459859 is an apocalyptic number.

72459859 is a deficient number, since it is larger than the sum of its proper divisors (1685157).

72459859 is a wasteful number, since it uses less digits than its factorization.

72459859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685156.

The product of its digits is 907200, while the sum is 49.

The square root of 72459859 is about 8512.3356959180. The cubic root of 72459859 is about 416.9005757209.

The spelling of 72459859 in words is "seventy-two million, four hundred fifty-nine thousand, eight hundred fifty-nine".