40205099 has 8 divisors (see below), whose sum is σ = 44478720. Its totient is φ = 36034600.

The previous prime is 40205093. The next prime is 40205101. The reversal of 40205099 is 99050204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40205099 - 2¹⁶ = 40139563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40205093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24959 + ... + 26520.

It is an arithmetic number, because the mean of its divisors is an integer number (5559840).

Almost surely, 2^40205099 is an apocalyptic number.

40205099 is a deficient number, since it is larger than the sum of its proper divisors (4273621).

40205099 is a wasteful number, since it uses less digits than its factorization.

40205099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51561.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 40205099 is about 6340.7490882387. The cubic root of 40205099 is about 342.5787170554.

It can be divided in two parts, 4020 and 5099, that added together give a palindrome (9119).

The spelling of 40205099 in words is "forty million, two hundred five thousand, ninety-nine".