40899474893 has 2 divisors, whose sum is σ = 40899474894. Its totient is φ = 40899474892.

The previous prime is 40899474857. The next prime is 40899474919. The reversal of 40899474893 is 39847499804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37479798409 + 3419676484 = 193597^2 + 58478^2 .

It is a cyclic number.

It is not a de Polignac number, because 40899474893 - 2¹⁰ = 40899473869 is a prime.

It is a super-3 number, since 3×40899474893³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40899477893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20449737446 + 20449737447.

It is an arithmetic number, because the mean of its divisors is an integer number (20449737447).

Almost surely, 2^40899474893 is an apocalyptic number.

It is an amenable number.

40899474893 is a deficient number, since it is larger than the sum of its proper divisors (1).

40899474893 is an equidigital number, since it uses as much as digits as its factorization.

40899474893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 40899474893 in words is "forty billion, eight hundred ninety-nine million, four hundred seventy-four thousand, eight hundred ninety-three".