40399127 has 2 divisors, whose sum is σ = 40399128. Its totient is φ = 40399126.

The previous prime is 40399103. The next prime is 40399159. The reversal of 40399127 is 72199304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40399127 - 2²⁴ = 23621911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40399427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20199563 + 20199564.

It is an arithmetic number, because the mean of its divisors is an integer number (20199564).

Almost surely, 2^40399127 is an apocalyptic number.

40399127 is a deficient number, since it is larger than the sum of its proper divisors (1).

40399127 is an equidigital number, since it uses as much as digits as its factorization.

40399127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 40399127 is about 6356.0307582642. The cubic root of 40399127 is about 343.1289227413.

The spelling of 40399127 in words is "forty million, three hundred ninety-nine thousand, one hundred twenty-seven".