40849052021 has 8 divisors (see below), whose sum is σ = 44420909400. Its totient is φ = 37407080448.

The previous prime is 40849052011. The next prime is 40849052039. The reversal of 40849052021 is 12025094804.

It can be written as a sum of positive squares in 4 ways, for example, as 24716241796 + 16132810225 = 157214^2 + 127015^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40849052021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40849052011) 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, 32470796 + ... + 32472053.

It is an arithmetic number, because the mean of its divisors is an integer number (5552613675).

Almost surely, 2^40849052021 is an apocalyptic number.

It is an amenable number.

40849052021 is a deficient number, since it is larger than the sum of its proper divisors (3571857379).

40849052021 is a wasteful number, since it uses less digits than its factorization.

40849052021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64942903.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 40849052021 in words is "forty billion, eight hundred forty-nine million, fifty-two thousand, twenty-one".