72373789 has 2 divisors, whose sum is σ = 72373790. Its totient is φ = 72373788.

The previous prime is 72373787. The next prime is 72373853. The reversal of 72373789 is 98737327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54243225 + 18130564 = 7365^2 + 4258^2 .

It is a cyclic number.

It is not a de Polignac number, because 72373789 - 2¹ = 72373787 is a prime.

Together with 72373787, 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 (72373787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36186894 + 36186895.

It is an arithmetic number, because the mean of its divisors is an integer number (36186895).

Almost surely, 2^72373789 is an apocalyptic number.

It is an amenable number.

72373789 is a deficient number, since it is larger than the sum of its proper divisors (1).

72373789 is an equidigital number, since it uses as much as digits as its factorization.

72373789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 46.

The square root of 72373789 is about 8507.2785895373. The cubic root of 72373789 is about 416.7354413053.

It can be divided in two parts, 7237 and 3789, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 72373789 in words is "seventy-two million, three hundred seventy-three thousand, seven hundred eighty-nine".