40321279 has 2 divisors, whose sum is σ = 40321280. Its totient is φ = 40321278.

The previous prime is 40321273. The next prime is 40321289. The reversal of 40321279 is 97212304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40321279 - 2⁹ = 40320767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40321273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20160639 + 20160640.

It is an arithmetic number, because the mean of its divisors is an integer number (20160640).

Almost surely, 2^40321279 is an apocalyptic number.

40321279 is a deficient number, since it is larger than the sum of its proper divisors (1).

40321279 is an equidigital number, since it uses as much as digits as its factorization.

40321279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 40321279 is about 6349.9038575399. The cubic root of 40321279 is about 342.9083810411.

The spelling of 40321279 in words is "forty million, three hundred twenty-one thousand, two hundred seventy-nine".