840773953 has 4 divisors (see below), whose sum is σ = 840833748. Its totient is φ = 840714160.

The previous prime is 840773939. The next prime is 840773957. The reversal of 840773953 is 359377048.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 311451904 + 529322049 = 17648^2 + 23007^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840773953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840773957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4023 + ... + 41203.

It is an arithmetic number, because the mean of its divisors is an integer number (210208437).

Almost surely, 2^840773953 is an apocalyptic number.

It is an amenable number.

840773953 is a deficient number, since it is larger than the sum of its proper divisors (59795).

840773953 is a wasteful number, since it uses less digits than its factorization.

840773953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59794.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 840773953 is about 28996.1023760091. The cubic root of 840773953 is about 943.8284907132.

The spelling of 840773953 in words is "eight hundred forty million, seven hundred seventy-three thousand, nine hundred fifty-three".