72854939 has 2 divisors, whose sum is σ = 72854940. Its totient is φ = 72854938.

The previous prime is 72854921. The next prime is 72854953. The reversal of 72854939 is 93945827.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72854939 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72854893 and 72854902.

It is not a weakly prime, because it can be changed into another prime (72854959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36427469 + 36427470.

It is an arithmetic number, because the mean of its divisors is an integer number (36427470).

Almost surely, 2^72854939 is an apocalyptic number.

72854939 is a deficient number, since it is larger than the sum of its proper divisors (1).

72854939 is an equidigital number, since it uses as much as digits as its factorization.

72854939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 72854939 is about 8535.5104709677. The cubic root of 72854939 is about 417.6569054188.

The spelling of 72854939 in words is "seventy-two million, eight hundred fifty-four thousand, nine hundred thirty-nine".