40234279 has 2 divisors, whose sum is σ = 40234280. Its totient is φ = 40234278.

The previous prime is 40234277. The next prime is 40234289. The reversal of 40234279 is 97243204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40234279 - 2¹ = 40234277 is a prime.

Together with 40234277, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40234279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40234273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20117139 + 20117140.

It is an arithmetic number, because the mean of its divisors is an integer number (20117140).

Almost surely, 2^40234279 is an apocalyptic number.

40234279 is a deficient number, since it is larger than the sum of its proper divisors (1).

40234279 is an equidigital number, since it uses as much as digits as its factorization.

40234279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 40234279 is about 6343.0496608493. The cubic root of 40234279 is about 342.6615757788.

The spelling of 40234279 in words is "forty million, two hundred thirty-four thousand, two hundred seventy-nine".