40709747 has 16 divisors (see below), whose sum is σ = 48444480. Its totient is φ = 33825792.

The previous prime is 40709743. The next prime is 40709749. The reversal of 40709747 is 74790704.

It is not a de Polignac number, because 40709747 - 2² = 40709743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40709747.

It is not an unprimeable number, because it can be changed into a prime (40709741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1079 + ... + 9087.

It is an arithmetic number, because the mean of its divisors is an integer number (3027780).

Almost surely, 2^40709747 is an apocalyptic number.

40709747 is a deficient number, since it is larger than the sum of its proper divisors (7734733).

40709747 is a wasteful number, since it uses less digits than its factorization.

40709747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8062.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 40709747 is about 6380.4190301265. The cubic root of 40709747 is about 344.0060927125.

The spelling of 40709747 in words is "forty million, seven hundred nine thousand, seven hundred forty-seven".