72415879 has 2 divisors, whose sum is σ = 72415880. Its totient is φ = 72415878.

The previous prime is 72415877. The next prime is 72415949. The reversal of 72415879 is 97851427.

It is a weak prime.

It is an emirp because it is prime and its reverse (97851427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72415879 - 2¹ = 72415877 is a prime.

Together with 72415877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72415873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36207939 + 36207940.

It is an arithmetic number, because the mean of its divisors is an integer number (36207940).

Almost surely, 2^72415879 is an apocalyptic number.

72415879 is a deficient number, since it is larger than the sum of its proper divisors (1).

72415879 is an equidigital number, since it uses as much as digits as its factorization.

72415879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 43.

The square root of 72415879 is about 8509.7519940360. The cubic root of 72415879 is about 416.8162117784.

The spelling of 72415879 in words is "seventy-two million, four hundred fifteen thousand, eight hundred seventy-nine".