40839199 has 2 divisors, whose sum is σ = 40839200. Its totient is φ = 40839198.

The previous prime is 40839187. The next prime is 40839209. The reversal of 40839199 is 99193804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40839199 - 2¹⁵ = 40806431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40839179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20419599 + 20419600.

It is an arithmetic number, because the mean of its divisors is an integer number (20419600).

Almost surely, 2^40839199 is an apocalyptic number.

40839199 is a deficient number, since it is larger than the sum of its proper divisors (1).

40839199 is an equidigital number, since it uses as much as digits as its factorization.

40839199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 40839199 is about 6390.5554531668. Note that the first 3 decimals coincide. The cubic root of 40839199 is about 344.3703392858.

The spelling of 40839199 in words is "forty million, eight hundred thirty-nine thousand, one hundred ninety-nine".