40383641 has 6 divisors (see below), whose sum is σ = 40608426. Its totient is φ = 40160000.

The previous prime is 40383611. The next prime is 40383643. The reversal of 40383641 is 14638304.

It can be written as a sum of positive squares in only one way, i.e., 39375625 + 1008016 = 6275^2 + 1004^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40383641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40383643) 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 5 ways as a sum of consecutive naturals, for example, 62681 + ... + 63321.

It is an arithmetic number, because the mean of its divisors is an integer number (6768071).

Almost surely, 2^40383641 is an apocalyptic number.

It is an amenable number.

40383641 is a deficient number, since it is larger than the sum of its proper divisors (224785).

40383641 is an frugal number, since it uses more digits than its factorization.

40383641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 40383641 is about 6354.8124283884. The cubic root of 40383641 is about 343.0850738268.

The spelling of 40383641 in words is "forty million, three hundred eighty-three thousand, six hundred forty-one".