40099879369 has 16 divisors (see below), whose sum is σ = 45334365120. Its totient is φ = 35134711360.

The previous prime is 40099879307. The next prime is 40099879397. The reversal of 40099879369 is 96397899004.

It is a cyclic number.

It is not a de Polignac number, because 40099879369 - 2¹³ = 40099871177 is a prime.

It is a super-2 number, since 2×40099879369² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40099879369.

It is not an unprimeable number, because it can be changed into a prime (40099879669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67959 + ... + 291235.

It is an arithmetic number, because the mean of its divisors is an integer number (2833397820).

Almost surely, 2^40099879369 is an apocalyptic number.

It is an amenable number.

40099879369 is a deficient number, since it is larger than the sum of its proper divisors (5234485751).

40099879369 is a wasteful number, since it uses less digits than its factorization.

40099879369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223880.

The product of its (nonzero) digits is 26453952, while the sum is 64.

The spelling of 40099879369 in words is "forty billion, ninety-nine million, eight hundred seventy-nine thousand, three hundred sixty-nine".