8440694541 has 6 divisors (see below), whose sum is σ = 12192114350. Its totient is φ = 5627129688.

The previous prime is 8440694513. The next prime is 8440694543. The reversal of 8440694541 is 1454960448.

8440694541 is a `hidden beast` number, since 8 + 4 + 40 + 69 + 4 + 541 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7808373225 + 632321316 = 88365^2 + 25146^2 .

It is not a de Polignac number, because 8440694541 - 2⁷ = 8440694413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8440694543) 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 in 5 ways as a sum of consecutive naturals, for example, 468927466 + ... + 468927483.

Almost surely, 2^8440694541 is an apocalyptic number.

It is an amenable number.

8440694541 is a deficient number, since it is larger than the sum of its proper divisors (3751419809).

8440694541 is a wasteful number, since it uses less digits than its factorization.

8440694541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937854955 (or 937854952 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 8440694541 is about 91873.2525874642. The cubic root of 8440694541 is about 2036.0701079793.

The spelling of 8440694541 in words is "eight billion, four hundred forty million, six hundred ninety-four thousand, five hundred forty-one".