40310399 has 2 divisors, whose sum is σ = 40310400. Its totient is φ = 40310398.

The previous prime is 40310357. The next prime is 40310401. The reversal of 40310399 is 99301304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40310399 - 2²⁴ = 23533183 is a prime.

Together with 40310401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40310299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20155199 + 20155200.

It is an arithmetic number, because the mean of its divisors is an integer number (20155200).

Almost surely, 2^40310399 is an apocalyptic number.

40310399 is a deficient number, since it is larger than the sum of its proper divisors (1).

40310399 is an equidigital number, since it uses as much as digits as its factorization.

40310399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 40310399 is about 6349.0470938559. The cubic root of 40310399 is about 342.8775356339.

The spelling of 40310399 in words is "forty million, three hundred ten thousand, three hundred ninety-nine".