40009707 has 28 divisors (see below), whose sum is σ = 60910704. Its totient is φ = 26263440.

The previous prime is 40009703. The next prime is 40009733. The reversal of 40009707 is 70790004.

It is not a de Polignac number, because 40009707 - 2² = 40009703 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40009703) 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 27 ways as a sum of consecutive naturals, for example, 51373 + ... + 52145.

Almost surely, 2^40009707 is an apocalyptic number.

40009707 is a deficient number, since it is larger than the sum of its proper divisors (20900997).

40009707 is an frugal number, since it uses more digits than its factorization.

40009707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 40009707 is about 6325.3226795160. The cubic root of 40009707 is about 342.0228516587.

40009707 divided by its sum of digits (27) gives a palindrome (1481841).

The spelling of 40009707 in words is "forty million, nine thousand, seven hundred seven".