40327649 has 4 divisors (see below), whose sum is σ = 40988820. Its totient is φ = 39666480.

The previous prime is 40327627. The next prime is 40327687. The reversal of 40327649 is 94672304.

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 4243600 + 36084049 = 2060^2 + 6007^2 .

It is a cyclic number.

It is not a de Polignac number, because 40327649 - 2⁸ = 40327393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40323649) 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, 330494 + ... + 330615.

It is an arithmetic number, because the mean of its divisors is an integer number (10247205).

Almost surely, 2^40327649 is an apocalyptic number.

It is an amenable number.

40327649 is a deficient number, since it is larger than the sum of its proper divisors (661171).

40327649 is an equidigital number, since it uses as much as digits as its factorization.

40327649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661170.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 40327649 is about 6350.4054201287. The cubic root of 40327649 is about 342.9264377713.

The spelling of 40327649 in words is "forty million, three hundred twenty-seven thousand, six hundred forty-nine".