288640379 has 2 divisors, whose sum is σ = 288640380. Its totient is φ = 288640378.

The previous prime is 288640351. The next prime is 288640397. The reversal of 288640379 is 973046882.

Together with next prime (288640397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 288640379 - 2¹⁶ = 288574843 is a prime.

It is equal to p_15669776 and since 288640379 and 15669776 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (288640309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144320189 + 144320190.

It is an arithmetic number, because the mean of its divisors is an integer number (144320190).

Almost surely, 2^288640379 is an apocalyptic number.

288640379 is a deficient number, since it is larger than the sum of its proper divisors (1).

288640379 is an equidigital number, since it uses as much as digits as its factorization.

288640379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 288640379 is about 16989.4196192807. The cubic root of 288640379 is about 660.8745515359.

The spelling of 288640379 in words is "two hundred eighty-eight million, six hundred forty thousand, three hundred seventy-nine".