40306747 has 4 divisors (see below), whose sum is σ = 43407280. Its totient is φ = 37206216.

The previous prime is 40306687. The next prime is 40306757. The reversal of 40306747 is 74760304.

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 40306747 - 2¹¹ = 40304699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40306757) 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, 1550247 + ... + 1550272.

It is an arithmetic number, because the mean of its divisors is an integer number (10851820).

Almost surely, 2^40306747 is an apocalyptic number.

40306747 is a deficient number, since it is larger than the sum of its proper divisors (3100533).

40306747 is a wasteful number, since it uses less digits than its factorization.

40306747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100532.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 40306747 is about 6348.7594851278. The cubic root of 40306747 is about 342.8671807660.

The spelling of 40306747 in words is "forty million, three hundred six thousand, seven hundred forty-seven".