40747807 has 4 divisors (see below), whose sum is σ = 40763160. Its totient is φ = 40732456.

The previous prime is 40747781. The next prime is 40747829. The reversal of 40747807 is 70874704.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40747807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40747307) 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, 2557 + ... + 9382.

It is an arithmetic number, because the mean of its divisors is an integer number (10190790).

Almost surely, 2^40747807 is an apocalyptic number.

40747807 is a deficient number, since it is larger than the sum of its proper divisors (15353).

40747807 is a wasteful number, since it uses less digits than its factorization.

40747807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15352.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 40747807 is about 6383.4008960741. The cubic root of 40747807 is about 344.1132643749.

It can be divided in two parts, 4074 and 7807, that added together give a square (11881 = 109²).

The spelling of 40747807 in words is "forty million, seven hundred forty-seven thousand, eight hundred seven".