40900161 has 4 divisors (see below), whose sum is σ = 54533552. Its totient is φ = 27266772.

The previous prime is 40900127. The next prime is 40900177. The reversal of 40900161 is 16100904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40900161 - 2⁷ = 40900033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40900061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6816691 + ... + 6816696.

It is an arithmetic number, because the mean of its divisors is an integer number (13633388).

Almost surely, 2^40900161 is an apocalyptic number.

It is an amenable number.

40900161 is a deficient number, since it is larger than the sum of its proper divisors (13633391).

40900161 is a wasteful number, since it uses less digits than its factorization.

40900161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13633390.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 40900161 is about 6395.3233694630. The cubic root of 40900161 is about 344.5416050297.

The spelling of 40900161 in words is "forty million, nine hundred thousand, one hundred sixty-one".