72046439 has 2 divisors, whose sum is σ = 72046440. Its totient is φ = 72046438.

The previous prime is 72046421. The next prime is 72046487. The reversal of 72046439 is 93464027.

It is a weak prime.

It is an emirp because it is prime and its reverse (93464027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72046439 - 2¹² = 72042343 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72046399 and 72046408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72046339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36023219 + 36023220.

It is an arithmetic number, because the mean of its divisors is an integer number (36023220).

Almost surely, 2^72046439 is an apocalyptic number.

72046439 is a deficient number, since it is larger than the sum of its proper divisors (1).

72046439 is an equidigital number, since it uses as much as digits as its factorization.

72046439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 72046439 is about 8488.0173774563. The cubic root of 72046439 is about 416.1061870661.

The spelling of 72046439 in words is "seventy-two million, forty-six thousand, four hundred thirty-nine".