40046147 has 4 divisors (see below), whose sum is σ = 40301376. Its totient is φ = 39790920.

The previous prime is 40046131. The next prime is 40046161. The reversal of 40046147 is 74164004.

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 40046147 - 2⁴ = 40046131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40046107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127379 + ... + 127692.

It is an arithmetic number, because the mean of its divisors is an integer number (10075344).

Almost surely, 2^40046147 is an apocalyptic number.

40046147 is a deficient number, since it is larger than the sum of its proper divisors (255229).

40046147 is a wasteful number, since it uses less digits than its factorization.

40046147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255228.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 40046147 is about 6328.2025094019. The cubic root of 40046147 is about 342.1266558918.

The spelling of 40046147 in words is "forty million, forty-six thousand, one hundred forty-seven".