40199807 has 4 divisors (see below), whose sum is σ = 40614336. Its totient is φ = 39785280.

The previous prime is 40199759. The next prime is 40199821. The reversal of 40199807 is 70899104.

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

It is a cyclic number.

It is not a de Polignac number, because 40199807 - 2¹⁶ = 40134271 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 (40199897) 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, 207119 + ... + 207312.

It is an arithmetic number, because the mean of its divisors is an integer number (10153584).

Almost surely, 2^40199807 is an apocalyptic number.

40199807 is a deficient number, since it is larger than the sum of its proper divisors (414529).

40199807 is an equidigital number, since it uses as much as digits as its factorization.

40199807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414528.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 40199807 is about 6340.3317736535. The cubic root of 40199807 is about 342.5636857437.

The spelling of 40199807 in words is "forty million, one hundred ninety-nine thousand, eight hundred seven".