40887161 has 16 divisors (see below), whose sum is σ = 47831040. Its totient is φ = 34229520.

The previous prime is 40887113. The next prime is 40887167. The reversal of 40887161 is 16178804.

It is a cyclic number.

It is not a de Polignac number, because 40887161 - 2¹⁰ = 40886137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40887167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58826 + ... + 59516.

It is an arithmetic number, because the mean of its divisors is an integer number (2989440).

Almost surely, 2^40887161 is an apocalyptic number.

It is an amenable number.

40887161 is a deficient number, since it is larger than the sum of its proper divisors (6943879).

40887161 is a wasteful number, since it uses less digits than its factorization.

40887161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 40887161 is about 6394.3069210040. The cubic root of 40887161 is about 344.5050973046.

The spelling of 40887161 in words is "forty million, eight hundred eighty-seven thousand, one hundred sixty-one".