40091677 has 4 divisors (see below), whose sum is σ = 40347196. Its totient is φ = 39836160.

The previous prime is 40091671. The next prime is 40091687. The reversal of 40091677 is 77619004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8608356 + 31483321 = 2934^2 + 5611^2 .

It is a cyclic number.

It is not a de Polignac number, because 40091677 - 2²³ = 31703069 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 (40091671) 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 3 ways as a sum of consecutive naturals, for example, 127524 + ... + 127837.

It is an arithmetic number, because the mean of its divisors is an integer number (10086799).

Almost surely, 2^40091677 is an apocalyptic number.

It is an amenable number.

40091677 is a deficient number, since it is larger than the sum of its proper divisors (255519).

40091677 is a wasteful number, since it uses less digits than its factorization.

40091677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255518.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 40091677 is about 6331.7988755171. The cubic root of 40091677 is about 342.2562657557.

The spelling of 40091677 in words is "forty million, ninety-one thousand, six hundred seventy-seven".