40205199 has 16 divisors (see below), whose sum is σ = 55294560. Its totient is φ = 25966080.

The previous prime is 40205189. The next prime is 40205203. The reversal of 40205199 is 99150204.

It is a happy number.

It is not a de Polignac number, because 40205199 - 2⁴ = 40205183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40205189) 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, 30547 + ... + 31835.

It is an arithmetic number, because the mean of its divisors is an integer number (3455910).

Almost surely, 2^40205199 is an apocalyptic number.

40205199 is a deficient number, since it is larger than the sum of its proper divisors (15089361).

40205199 is a wasteful number, since it uses less digits than its factorization.

40205199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 40205199 is about 6340.7569737374. The cubic root of 40205199 is about 342.5790010811.

It can be divided in two parts, 40205 and 199, that added together give a palindrome (40404).

The spelling of 40205199 in words is "forty million, two hundred five thousand, one hundred ninety-nine".