40001705 has 8 divisors (see below), whose sum is σ = 48816000. Its totient is φ = 31458736.

The previous prime is 40001657. The next prime is 40001711. The reversal of 40001705 is 50710004.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40001705 - 2⁶ = 40001641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67505 + ... + 68094.

It is an arithmetic number, because the mean of its divisors is an integer number (6102000).

Almost surely, 2^40001705 is an apocalyptic number.

It is an amenable number.

40001705 is a deficient number, since it is larger than the sum of its proper divisors (8814295).

40001705 is a wasteful number, since it uses less digits than its factorization.

40001705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135663.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 40001705 is about 6324.6901109857. The cubic root of 40001705 is about 342.0000484479. Note that the first 4 decimals are identical.

Subtracting from 40001705 its sum of digits (17), we obtain a cube (40001688 = 342³).

Adding to 40001705 its reverse (50710004), we get a palindrome (90711709).

The spelling of 40001705 in words is "forty million, one thousand, seven hundred five".