40431547 has 8 divisors (see below), whose sum is σ = 43611344. Its totient is φ = 37261728.

The previous prime is 40431529. The next prime is 40431557. The reversal of 40431547 is 74513404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40431547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40431557) 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 7 ways as a sum of consecutive naturals, for example, 7408 + ... + 11650.

It is an arithmetic number, because the mean of its divisors is an integer number (5451418).

Almost surely, 2^40431547 is an apocalyptic number.

40431547 is a deficient number, since it is larger than the sum of its proper divisors (3179797).

40431547 is a wasteful number, since it uses less digits than its factorization.

40431547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 40431547 is about 6358.5805806013. The cubic root of 40431547 is about 343.2206843388.

The spelling of 40431547 in words is "forty million, four hundred thirty-one thousand, five hundred forty-seven".