940801643 has 4 divisors (see below), whose sum is σ = 942672528. Its totient is φ = 938930760.

The previous prime is 940801639. The next prime is 940801657. The reversal of 940801643 is 346108049.

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 940801643 - 2² = 940801639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (940801613) 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 3 ways as a sum of consecutive naturals, for example, 934688 + ... + 935693.

It is an arithmetic number, because the mean of its divisors is an integer number (235668132).

Almost surely, 2^940801643 is an apocalyptic number.

940801643 is a deficient number, since it is larger than the sum of its proper divisors (1870885).

940801643 is a wasteful number, since it uses less digits than its factorization.

940801643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870884.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 940801643 is about 30672.4900032586. The cubic root of 940801643 is about 979.8644970918.

The spelling of 940801643 in words is "nine hundred forty million, eight hundred one thousand, six hundred forty-three".