40299421091 has 4 divisors (see below), whose sum is σ = 41388594672. Its totient is φ = 39210247512.

The previous prime is 40299421081. The next prime is 40299421093. The reversal of 40299421091 is 19012499204.

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 40299421091 - 2⁶ = 40299421027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40299421093) 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, 544586735 + ... + 544586808.

It is an arithmetic number, because the mean of its divisors is an integer number (10347148668).

Almost surely, 2^40299421091 is an apocalyptic number.

40299421091 is a deficient number, since it is larger than the sum of its proper divisors (1089173581).

40299421091 is a wasteful number, since it uses less digits than its factorization.

40299421091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089173580.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 40299421091 in words is "forty billion, two hundred ninety-nine million, four hundred twenty-one thousand, ninety-one".