40733639 has 4 divisors (see below), whose sum is σ = 40771224. Its totient is φ = 40696056.

The previous prime is 40733617. The next prime is 40733647. The reversal of 40733639 is 93633704.

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

It is a cyclic number.

It is not a de Polignac number, because 40733639 - 2⁸ = 40733383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40733599 and 40733608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40733669) 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, 17117 + ... + 19350.

It is an arithmetic number, because the mean of its divisors is an integer number (10192806).

Almost surely, 2^40733639 is an apocalyptic number.

40733639 is a deficient number, since it is larger than the sum of its proper divisors (37585).

40733639 is a wasteful number, since it uses less digits than its factorization.

40733639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37584.

The product of its (nonzero) digits is 40824, while the sum is 35.

The square root of 40733639 is about 6382.2910463250. The cubic root of 40733639 is about 344.0733770594.

The spelling of 40733639 in words is "forty million, seven hundred thirty-three thousand, six hundred thirty-nine".