40947547 has 4 divisors (see below), whose sum is σ = 41345200. Its totient is φ = 40549896.

The previous prime is 40947541. The next prime is 40947563. The reversal of 40947547 is 74574904.

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 40947547 - 2¹⁵ = 40914779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40947541) 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, 198672 + ... + 198877.

It is an arithmetic number, because the mean of its divisors is an integer number (10336300).

Almost surely, 2^40947547 is an apocalyptic number.

40947547 is a deficient number, since it is larger than the sum of its proper divisors (397653).

40947547 is a wasteful number, since it uses less digits than its factorization.

40947547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397652.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 40947547 is about 6399.0270354172. The cubic root of 40947547 is about 344.6746130423.

The spelling of 40947547 in words is "forty million, nine hundred forty-seven thousand, five hundred forty-seven".