40099879371 has 4 divisors (see below), whose sum is σ = 53466505832. Its totient is φ = 26733252912.

The previous prime is 40099879307. The next prime is 40099879397. The reversal of 40099879371 is 17397899004.

40099879371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40099879371 - 2⁶ = 40099879307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40099875371) 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, 6683313226 + ... + 6683313231.

It is an arithmetic number, because the mean of its divisors is an integer number (13366626458).

Almost surely, 2^40099879371 is an apocalyptic number.

40099879371 is a deficient number, since it is larger than the sum of its proper divisors (13366626461).

40099879371 is a wasteful number, since it uses less digits than its factorization.

40099879371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13366626460.

The product of its (nonzero) digits is 3429216, while the sum is 57.

The spelling of 40099879371 in words is "forty billion, ninety-nine million, eight hundred seventy-nine thousand, three hundred seventy-one".