72960389 has 2 divisors, whose sum is σ = 72960390. Its totient is φ = 72960388.

The previous prime is 72960341. The next prime is 72960431. The reversal of 72960389 is 98306927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71656225 + 1304164 = 8465^2 + 1142^2 .

It is a cyclic number.

It is not a de Polignac number, because 72960389 - 2²⁴ = 56183173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72900389) 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, 36480194 + 36480195.

It is an arithmetic number, because the mean of its divisors is an integer number (36480195).

Almost surely, 2^72960389 is an apocalyptic number.

It is an amenable number.

72960389 is a deficient number, since it is larger than the sum of its proper divisors (1).

72960389 is an equidigital number, since it uses as much as digits as its factorization.

72960389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 72960389 is about 8541.6853723372. The cubic root of 72960389 is about 417.8583133564.

The spelling of 72960389 in words is "seventy-two million, nine hundred sixty thousand, three hundred eighty-nine".