40199671 has 4 divisors (see below), whose sum is σ = 40858744. Its totient is φ = 39540600.

The previous prime is 40199651. The next prime is 40199689. The reversal of 40199671 is 17699104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40199671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40199671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40199651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329445 + ... + 329566.

It is an arithmetic number, because the mean of its divisors is an integer number (10214686).

Almost surely, 2^40199671 is an apocalyptic number.

40199671 is a deficient number, since it is larger than the sum of its proper divisors (659073).

40199671 is an equidigital number, since it uses as much as digits as its factorization.

40199671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659072.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 40199671 is about 6340.3210486536. The cubic root of 40199671 is about 342.5632994341.

The spelling of 40199671 in words is "forty million, one hundred ninety-nine thousand, six hundred seventy-one".