40901647 has 4 divisors (see below), whose sum is σ = 40944240. Its totient is φ = 40859056.

The previous prime is 40901639. The next prime is 40901657. The reversal of 40901647 is 74610904.

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 40901647 - 2³ = 40901639 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 (40901657) 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, 19822 + ... + 21787.

It is an arithmetic number, because the mean of its divisors is an integer number (10236060).

Almost surely, 2^40901647 is an apocalyptic number.

40901647 is a deficient number, since it is larger than the sum of its proper divisors (42593).

40901647 is an equidigital number, since it uses as much as digits as its factorization.

40901647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42592.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 40901647 is about 6395.4395470523. The cubic root of 40901647 is about 344.5457776508.

The spelling of 40901647 in words is "forty million, nine hundred one thousand, six hundred forty-seven".