840263763 has 4 divisors (see below), whose sum is σ = 1120351688. Its totient is φ = 560175840.

The previous prime is 840263759. The next prime is 840263783. The reversal of 840263763 is 367362048.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 840263763 - 2² = 840263759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840263713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140043958 + ... + 140043963.

It is an arithmetic number, because the mean of its divisors is an integer number (280087922).

Almost surely, 2^840263763 is an apocalyptic number.

840263763 is a deficient number, since it is larger than the sum of its proper divisors (280087925).

840263763 is a wasteful number, since it uses less digits than its factorization.

840263763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280087924.

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 840263763 is about 28987.3034792821. The cubic root of 840263763 is about 943.6375439122.

The spelling of 840263763 in words is "eight hundred forty million, two hundred sixty-three thousand, seven hundred sixty-three".