40654199 has 2 divisors, whose sum is σ = 40654200. Its totient is φ = 40654198.

The previous prime is 40654189. The next prime is 40654213. The reversal of 40654199 is 99145604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40654199 - 2¹⁶ = 40588663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40654109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20327099 + 20327100.

It is an arithmetic number, because the mean of its divisors is an integer number (20327100).

Almost surely, 2^40654199 is an apocalyptic number.

40654199 is a deficient number, since it is larger than the sum of its proper divisors (1).

40654199 is an equidigital number, since it uses as much as digits as its factorization.

40654199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 40654199 is about 6376.0645385692. The cubic root of 40654199 is about 343.8495573231.

The spelling of 40654199 in words is "forty million, six hundred fifty-four thousand, one hundred ninety-nine".