40119561 has 6 divisors (see below), whose sum is σ = 57950490. Its totient is φ = 26746368.

The previous prime is 40119553. The next prime is 40119601. The reversal of 40119561 is 16591104.

It can be written as a sum of positive squares in only one way, i.e., 23765625 + 16353936 = 4875^2 + 4044^2 .

It is not a de Polignac number, because 40119561 - 2³ = 40119553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40119551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2228856 + ... + 2228873.

It is an arithmetic number, because the mean of its divisors is an integer number (9658415).

Almost surely, 2^40119561 is an apocalyptic number.

It is an amenable number.

40119561 is a deficient number, since it is larger than the sum of its proper divisors (17830929).

40119561 is a wasteful number, since it uses less digits than its factorization.

40119561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457735 (or 4457732 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 40119561 is about 6334.0003946953. Note that the first 3 decimals coincide. The cubic root of 40119561 is about 342.3355944574.

The spelling of 40119561 in words is "forty million, one hundred nineteen thousand, five hundred sixty-one".