840993941 has 8 divisors (see below), whose sum is σ = 888412800. Its totient is φ = 793890720.

The previous prime is 840993929. The next prime is 840993943. The reversal of 840993941 is 149399048.

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 840993941 - 2²² = 836799637 is a prime.

It is a super-2 number, since 2×840993941² = 1414541617597422962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840993943) 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 7 ways as a sum of consecutive naturals, for example, 73421 + ... + 84098.

It is an arithmetic number, because the mean of its divisors is an integer number (111051600).

Almost surely, 2^840993941 is an apocalyptic number.

It is an amenable number.

840993941 is a deficient number, since it is larger than the sum of its proper divisors (47418859).

840993941 is a wasteful number, since it uses less digits than its factorization.

840993941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157819.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 840993941 is about 28999.8955342946. The cubic root of 840993941 is about 943.9108009208.

The spelling of 840993941 in words is "eight hundred forty million, nine hundred ninety-three thousand, nine hundred forty-one".