40671899 has 2 divisors, whose sum is σ = 40671900. Its totient is φ = 40671898.

The previous prime is 40671887. The next prime is 40671901. The reversal of 40671899 is 99817604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40671899 - 2⁸ = 40671643 is a prime.

Together with 40671901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40671859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20335949 + 20335950.

It is an arithmetic number, because the mean of its divisors is an integer number (20335950).

Almost surely, 2^40671899 is an apocalyptic number.

40671899 is a deficient number, since it is larger than the sum of its proper divisors (1).

40671899 is an equidigital number, since it uses as much as digits as its factorization.

40671899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 40671899 is about 6377.4523910414. The cubic root of 40671899 is about 343.8994517519.

The spelling of 40671899 in words is "forty million, six hundred seventy-one thousand, eight hundred ninety-nine".