40026647 has 4 divisors (see below), whose sum is σ = 41766960. Its totient is φ = 38286336.

The previous prime is 40026643. The next prime is 40026659. The reversal of 40026647 is 74662004.

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 40026647 - 2² = 40026643 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 (40026643) 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, 870122 + ... + 870167.

It is an arithmetic number, because the mean of its divisors is an integer number (10441740).

Almost surely, 2^40026647 is an apocalyptic number.

40026647 is a deficient number, since it is larger than the sum of its proper divisors (1740313).

40026647 is a wasteful number, since it uses less digits than its factorization.

40026647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740312.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 40026647 is about 6326.6615999277. The cubic root of 40026647 is about 342.0711153596.

The spelling of 40026647 in words is "forty million, twenty-six thousand, six hundred forty-seven".