40607639 has 8 divisors (see below), whose sum is σ = 41382768. Its totient is φ = 39836160.

The previous prime is 40607629. The next prime is 40607641. The reversal of 40607639 is 93670604.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40607639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40607599 and 40607608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40607629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32759 + ... + 33975.

It is an arithmetic number, because the mean of its divisors is an integer number (5172846).

Almost surely, 2^40607639 is an apocalyptic number.

40607639 is a deficient number, since it is larger than the sum of its proper divisors (775129).

40607639 is a wasteful number, since it uses less digits than its factorization.

40607639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 40607639 is about 6372.4123375689. The cubic root of 40607639 is about 343.7182404156.

The spelling of 40607639 in words is "forty million, six hundred seven thousand, six hundred thirty-nine".