40704247 has 4 divisors (see below), whose sum is σ = 40859280. Its totient is φ = 40549216.

The previous prime is 40704241. The next prime is 40704253. The reversal of 40704247 is 74240704.

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

It is an interprime number because it is at equal distance from previous prime (40704241) and next prime (40704253).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40704247 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 (40704241) 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, 77122 + ... + 77647.

It is an arithmetic number, because the mean of its divisors is an integer number (10214820).

Almost surely, 2^40704247 is an apocalyptic number.

40704247 is a deficient number, since it is larger than the sum of its proper divisors (155033).

40704247 is a wasteful number, since it uses less digits than its factorization.

40704247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155032.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 40704247 is about 6379.9880093931. The cubic root of 40704247 is about 343.9905999550.

The spelling of 40704247 in words is "forty million, seven hundred four thousand, two hundred forty-seven".