40190761 has 8 divisors (see below), whose sum is σ = 43442504. Its totient is φ = 36961920.

The previous prime is 40190753. The next prime is 40190791. The reversal of 40190761 is 16709104.

It can be written as a sum of positive squares in 4 ways, for example, as 3515625 + 36675136 = 1875^2 + 6056^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40190761 - 2³ = 40190753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40190791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1980 + ... + 9181.

It is an arithmetic number, because the mean of its divisors is an integer number (5430313).

Almost surely, 2^40190761 is an apocalyptic number.

It is an amenable number.

40190761 is a deficient number, since it is larger than the sum of its proper divisors (3251743).

40190761 is a wasteful number, since it uses less digits than its factorization.

40190761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11451.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 40190761 is about 6339.6183639080. The cubic root of 40190761 is about 342.5379885758.

Adding to 40190761 its reverse (16709104), we get a palindrome (56899865).

The spelling of 40190761 in words is "forty million, one hundred ninety thousand, seven hundred sixty-one".