840269694 has 64 divisors (see below), whose sum is σ = 1903749120. Its totient is φ = 244944000.

The previous prime is 840269627. The next prime is 840269701. The reversal of 840269694 is 496962048.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369192 + ... + 371460.

It is an arithmetic number, because the mean of its divisors is an integer number (29746080).

Almost surely, 2^840269694 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840269694, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (951874560).

840269694 is an abundant number, since it is smaller than the sum of its proper divisors (1063479426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840269694 is a wasteful number, since it uses less digits than its factorization.

840269694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497.

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 840269694 is about 28987.4057825118. The cubic root of 840269694 is about 943.6397641282.

The spelling of 840269694 in words is "eight hundred forty million, two hundred sixty-nine thousand, six hundred ninety-four".