40199071 has 16 divisors (see below), whose sum is σ = 44835840. Its totient is φ = 35736480.

The previous prime is 40199063. The next prime is 40199077. The reversal of 40199071 is 17099104.

40199071 = T₂₆₉₈ + T₂₆₉₉ + ... + T₂₇₀₈.

It is a cyclic number.

It is not a de Polignac number, because 40199071 - 2³ = 40199063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40199077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144985 + ... + 145261.

It is an arithmetic number, because the mean of its divisors is an integer number (2802240).

Almost surely, 2^40199071 is an apocalyptic number.

40199071 is a deficient number, since it is larger than the sum of its proper divisors (4636769).

40199071 is a wasteful number, since it uses less digits than its factorization.

40199071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 40199071 is about 6340.2737322611. The cubic root of 40199071 is about 342.5615951167.

The spelling of 40199071 in words is "forty million, one hundred ninety-nine thousand, seventy-one".