72859427 has 2 divisors, whose sum is σ = 72859428. Its totient is φ = 72859426.

The previous prime is 72859387. The next prime is 72859441. The reversal of 72859427 is 72495827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72859427 - 2⁶ = 72859363 is a prime.

It is a super-2 number, since 2×72859427² = 10616992205536658, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72859487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36429713 + 36429714.

It is an arithmetic number, because the mean of its divisors is an integer number (36429714).

Almost surely, 2^72859427 is an apocalyptic number.

72859427 is a deficient number, since it is larger than the sum of its proper divisors (1).

72859427 is an equidigital number, since it uses as much as digits as its factorization.

72859427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The square root of 72859427 is about 8535.7733685941. The cubic root of 72859427 is about 417.6654813906.

The spelling of 72859427 in words is "seventy-two million, eight hundred fifty-nine thousand, four hundred twenty-seven".